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SPD1200M17 Mini 905nm Laser Rangefinder Module for Thermal Imagers, Night Vision and Civil UAV Payloads

$130.00 USD
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Product Model:SPD1200M17

mini 905nm laser rangefinder module for thermal imaging SPD1200M17 delivers 0.2–1200m, 2–15Hz UART-TTL output and 6g SWaP—choose ERDI’s advanced 905nm core for night vision and civil UAV payloads.

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Contact Us

Senior Engineer, Yilin

Tel : +86 28 81076698

WhatsApp : +86 18000520222

ERDI Pre-Sales Notice & Customer Information

(Please Read Before Purchase or Inquiry) Thank you for your interest in ERDI TECH LTD. We are committed to providing customers worldwide with high-precision, high-reliability laser products and technical solutions. Before placing an order, please read the following information carefully to better understand our company, services, and purchasing policies.

  • About ERDI​

     ERDI is a professional manufacturer specializing in the research, development, and production of laser modules, laser measurement systems, and related optoelectronic components.
    We integrate design, R&D, production, and sales, with a focus on safety, innovation, and precision.

    Our products are widely used in:

    • Industrial measurement and alignment systems
    • Scientific research and educational applications
    • Optical instrumentation and laser testing
    • Consumer and OEM laser solutions

    ERDI operates certified facilities and maintains rigorous quality control to ensure that every product meets international standards.

  • Global Presence and Trade Reliability​

    ERDI has established official stores on leading global platforms including Amazon, Alibaba International Station, and Made-in-China.com, allowing customers worldwide to purchase safely and conveniently. We are a verified and trusted factory, not a reseller, and we ensure that all transactions, quotations, and logistics follow transparent and secure trade practices.
  • Sample and Lead Time​

    To help customers evaluate our products and performance, we offer sample orders for most product categories.

    • Standard samplesare typically delivered within one week after order confirmation.
    • Customized modulesmay require additional processing time depending on design complexity and optical requirements.
      Our logistics team will provide real-time tracking and documentation for every shipment.
  • OEM / ODM / OBM Services​

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    We provide technical co-development, logo engraving, packaging customization, and batch production services to meet both small-scale and mass-production requirements.

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    We provide:

    • Comprehensive technical consultation and project evaluation
    • One-on-one on-site technical assistanceat the customer’s facility when required
    • Lifetime after-sales supportand technical maintenance guidance

    Each laser product is delivered with a full set of user documentation, including Laser Module Usage Precautions and Safety Guidelines.

  • Quality Assurance and Warranty​

    ERDI implements strict multi-stage quality control throughout production:

    • Incoming material inspection
    • Optical alignment verification
    • Output power and wavelength calibration
    • Safety and durability testing under standard conditions

    We guarantee that all products leaving our factory meet design and performance specifications.
    Except for man-made damage, we will replace any defective unit within one year free of charge and provide lifetime maintenance support thereafter.

    For more details, please refer to our After-Sales Service & Warranty Policy.

  • Important Safety Reminder

    Before using any ERDI laser product:

    • Carefully read and follow the Laser Module Usage Precautions.
    • Always use appropriate laser protective eyewear.
    • Operate only in controlled environmentsunder trained personnel supervision.
      Failure to observe safety instructions may result in injury or equipment damage.
  • Communication and Order Confirmation​

    To ensure efficient service, please confirm the following before placing an order:

    • Product model, wavelength, output power, and working voltage/current
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  • Final Statement​

    ERDI upholds the values of safety, integrity, and precision. We sincerely welcome customers from all over the world to visit our facilities, discuss cooperation, and experience our advanced laser technologies firsthand. Your satisfaction and trust are our highest pursuit.

After-Sales Service & Warranty Policy

We strive to provide high-quality laser modules and excellent customer service. Please read the following terms carefully to understand your rights and our responsibilities.

  • Product Origin and Quality Assurance​

    • All ERDI products are manufactured directly by the factory, ensuring consistent quality and full traceability.
    • We provide a diverse rangeof laser modules and laser distance measurement modules to suit various industrial, educational, and research applications.
    • Every product is tested and inspectedbefore shipment to guarantee that it meets specification standards.
  • Return and Exchange Policy​

    • Customers may request a return or exchange within 30 daysof receiving the goods, provided that:
    • The product remains in original condition, unused, and without affecting secondary sales.
    • A valid reason for return or exchangeis provided.
    • Upon approval, we will replace or refund according to our service policy.
    • The buyer is responsible for shipping costsassociated with returns, exchanges, or repairs, based on international freight cost rules.
  • Warranty Coverage​

    • The main functional componentsof ERDI laser products are covered by a 2-year warranty from the date of purchase, excluding cosmetic appearance.
    • Within the first 12 months, if a verified manufacturing defect occurs, we will replace the item with a brand-new productfree of charge.
    • Replacement of cosmetic or housing components (e.g., enclosure, labeling, or exterior parts) may incur a reasonable cost feebased on material expenses.
    • Warranty does not cover:
    • Damage due to misuse, improper installation, or modification.
    • Operation outside the recommended power supply or temperature range.
    • Accidental or physical damage, including drops, fire, or liquid ingress.
  • Receiving Inspection​

    • Upon delivery, please inspect the parcel immediately in the presence of the courier.
    • If there is any quantity discrepancy, visible damage, or mismatch, do not signthe delivery receipt.
    • Once the package is signed for (by you, family, or colleagues), it is considered accepted as correct and complete.
  • Customer Support

    For technical assistance, warranty claims, or safety inquiries, please contact our official service team through the contact information listed on erdicn.com.
    Our support engineers will provide professional guidance on installation, alignment, safety, and maintenance procedures.

Laser Module Usage Precautions

(Important – Buyers Must Read Before Use)

Operating laser modules involves potential optical and thermal hazards. To ensure safe and proper use, please read the following precautions carefully before powering on your laser product.

  • General Safety Warnings​

    • Invisible Radiation Warning– Some laser modules emit infrared (IR) or ultraviolet (UV) radiation that is invisible to the human eye. Never assume the laser is malfunctioning simply because you cannot see the beam. Always confirm that the power is disconnected before inspecting the module.
    • Do Not Look Directly into the Laser Aperture– Even when wearing certified laser safety goggles, never stare directly into or near the beam exit of a working laser module.
    • Avoid Reflected Beams from High-Power Lasers– Reflection from Class IV lasers (output power > 500 mW) can cause severe and permanent eye damage. Always wear wavelength-specific safety goggles when operating or aligning high-power laser systems.
    • Keep Away from Flammable Materials– Do not place flammable or explosive items (such as paper, cloth, leather, or plastics) in the laser path. Black or dark-colored materials absorb laser energy more easily and may ignite. (Exception: controlled material-burning experiments with proper fire protection.)
    • Avoid Direct Human Exposure– Class IIIa or higher lasers (≥ 5 mW) can burn skin or eyes. Never point a laser beam at any part of a person’s body.
    • Restrict Access to Trained Personnel Only – Keep all laser devices out of reach of untrained individuals, children, and pets.
  • Optical Path and Reflection Safety​

    • Never Aim Toward Glass Surfaces– Ordinary glass reflects roughly 4 % of incident light, which can redirect dangerous laser radiation into your eyes. Avoid operating lasers in front of mirrors or reflective windows.
    • Working Plane Awareness– When setting up an experimental platform, note the laser emission height. Do not position your head or eyes near this level during operation. Lenses and mirrors may reflect or refract light unexpectedly. Always align optical components downward or horizontally—never angle a beam upward.
    • Remove Reflective Accessories– Watches, jewelry, and other shiny objects can reflect laser light unpredictably. Remove them before use.
    • Infrared Beam Detection– IR lasers (wavelength > 800 nm) are almost completely invisible. Use a beam-viewing card, IR detector, or up-conversion screen to visualize the beam path safely.
    • Visual Brightness Misjudgment– Some wavelengths (below 430 nm or above 700 nm) appear much dimmer than their actual power output. Do not rely on visual brightness to judge beam intensity.
    • Pulsed Laser Caution– Pulsed lasers can have extremely high peak power even at modest average power levels. Verify that all optical elements and samples in your experiment exceed the laser’s damage threshold before exposure.
    • Prohibited Uses– It is strictly forbidden to point laser beams at moving vehicles, aircraft, or any area where light could distract or endanger others.
    • End-of-Beam Safety Stop– Always place a black anodized or matte metal plate at the end of your optical path to absorb residual energy and prevent laser leakage into surrounding areas.

    Low-Power Modules – ERDI laser modules rated below 1 mW are considered eye-safe under normal operating conditions and can be used without hazard when handled properly.

  • Recommended Protective Measures​

    • Protective Eyewear– Always wear certified laser safety goggles designed for the specific wavelength and power level of your module.
    • Appropriate Clothing– Light-colored or white long-sleeved clothing reduces the risk of heat absorption or ignition if stray laser light contacts the fabric.
    • UV Laser Protection– For ultraviolet lasers, apply broad-spectrum sunscreen (SPF 30 or higher) to exposed skin areas to minimize UV radiation effects.
    • Environmental Safety– Operate lasers in a controlled laboratory or industrial environment with minimal reflective surfaces. Ensure that all personnel nearby are informed of ongoing laser use and have received proper training.

Technical Specifications

No.

Parameter

Specification

1

Laser Wavelength

905 nm ± 5 nm

2

Laser Beam Divergence

< 4mrad

3

Optical Material

PMMA

4

Receiving Aperture

5.0mm × 7mm

5

Measurement Range

0.2 m – 1200 m
Maximum 1500 m (nighttime)

Note: The measurement range may be reduced under strong sunlight or low-visibility conditions.

6

Ranging Accuracy

±0.3m (≤100m)

±0.3m+d*0.7‰ (100m<d<1200m)

7

Measurement Frequency

2 Hz – 15 Hz or 4 Hz – 15 Hz Adaptive

8

Measurement Accuracy Rate

≥ 98%

9

False Alarm Rate

≤ 1%

10

Communication Interface

UART-TTL (Customizable)

11

Baud Rate

Default 115200 bps

12

Supply Voltage

3.3 V – 5 V

13

Startup Time

≤ 200 ms

14

Operating Power Consumption

Average Power Consumption ≈ 0.45 W

Maximum Power Consumption ≤ 0.75 W

15

Operating Temperature

-20°C to +60°C

16

Storage Temperature

-30°C to +70°C

17

Protection Rating

IP67 (Inside Lens Cavity)

18

Laser Safety Class

IEC Class I

19

Dimensions

¢17*27.85mm 

20

Weight

≈ 6 g

21

Shock Resistance

1000 g/ms (10 times/s along optical axis)

22

Vibration Resistance

5–50–5 Hz, 1 octave/min, 2.5 g

23

Reliability

MTBF ≥ 1500 h

Functional Description

The system supports single measurement and continuous measurement functions.

3.1 Baud Rate Configuration
Allows modification of the serial communication baud rate.

3.2 Single Measurement
Triggers a single distance measurement to the target. For low-reflectivity targets, the system automatically repeats measurements until stable distance data is obtained. The final result is transmitted via the serial interface in the standard data format.

3.3 Continuous Measurement
In continuous measurement mode, the laser module performs repeated distance measurements on the target. The typical refresh rate can be set to 2 Hz, and the maximum refresh rate can reach 15 Hz.

Electrical Interface Definition

Pin

Definition

Description

1

SW-SHOT

Function Enable (active high)

Note: Compatible with active-low control requirements

2

RXD

Signal input port, Host → Ranging Module

3

TXD

Signal output port, Ranging Module → Host

4

I/O (Reserved)

Reserved for expansion

5

VCC

Power +

6

GND

Power −

Mechanical Interface

LRF1200M17

Product Description

The SPD1200M17 is a mini 905nm laser rangefinder module built for compact electro-optical systems that need reliable distance measurement without adding much size, weight or power burden. It is designed for thermal imagers, night vision devices, telescopes, laser illuminators and lightweight civil UAV payloads, where a small 1.2 km-class rangefinder core is more useful than a bulky long-range assembly.

Operating at 905nm ±5nm, the module measures from 0.2m to 1200m, with a maximum nighttime range of 1500m under favourable conditions. Its stated accuracy is ±0.3m below 100m, and ±0.3m + d×0.7‰ from 100m to 1200m, where d is the measured distance. The valid measurement rate is ≥98%, the false alarm rate is ≤1%, beam divergence is <4mrad, and the receiving aperture is 5.0mm × 7mm. Those figures place the SPD1200M17 in the same practical integration class as other compact 905nm ranging modules commonly used with thermal imaging, handheld optics and small UAV payloads.

The module supports both single measurement and continuous measurement. Refresh rate is specified at 2–15Hz, with 4–15Hz adaptive operation also supported, giving designers a useful balance between responsiveness and power draw. In single mode, if the target reflectivity is low, the system automatically repeats measurements internally until stable data is obtained before sending the result. In continuous mode, the typical output rate can be set to 2Hz, while the maximum reaches 15Hz. That behaviour is especially useful for handheld optics and portable EO devices, where the target scene may change quickly but stable distance output still matters.

Electrically, the SPD1200M17 uses a UART-TTL interface with a default baud rate of 115200bps, running from 3.3V to 5V. Startup time is ≤200ms, startup current is about 380mA, average operating power is around 0.45W, and maximum power is ≤0.75W. That makes it easy to power from compact embedded electronics and battery-based optical products. Similar 905nm OEM modules sold for thermal imaging, night vision and UAV integration are also generally positioned around small form factor, TTL output and low-power operation, which matches the intended role of this unit.

The protocol is straightforward for secondary development. It uses an 8-byte frame with 0x55 0xAA headers, a function code, four data bytes and checksum. Supported commands include single-shot ranging, continuous ranging, stop ranging, optional angle measurement for angle-sensor versions, power-on self-test, baud-rate configuration and LD constant-ON mode for development. Distance data is returned in hexadecimal as the actual value multiplied by 10, so the host can reconstruct the result with one decimal place. The manual also notes that baud-rate changes become effective only after reboot and that LD constant-ON mode should not be enabled for long periods.

Mechanically, the SPD1200M17 adopts a Ø17 × 27.85mm cylindrical body and weighs ≤6g. It uses a 6-pin electrical interface including SW-SHOT, RXD, TXD, reserved I/O, VCC and GND. The guide specifies that the Enable pin must be pulled LOW (connected to GND) during use, which is a small but essential integration detail. This compact round structure makes the module easy to embed in monoculars, compact thermal viewers, telescope housings and miniature pod systems.

The environmental envelope is practical for civil outdoor equipment: −20°C to +60°C operating temperature, −30°C to +70°C storage, IP67 protection inside the lens cavity, 1000g/ms shock resistance along the optical axis, 5–50–5Hz, 2.5g vibration resistance, and MTBF ≥1500h. These specifications fit field optics, outdoor observation equipment and lightweight sensor heads rather well.

For optical-window integration, the manual recommends H-K9L optical glass or fused silica, wedge-angle tolerance ≤3′, surface roughness around Ra 0.012, and an AR coating optimized for 855–955nm with transmittance ≥99.5%. After hydrophobic or hard coatings, total transmittance should remain ≥98%. Window thickness is recommended at 2–4mm, with the transmit optical axis parallel to the window normal and the air gap kept below 0.5mm to reduce transmission loss and back-reflection. The glamorous part of laser products is the beam; the reason they still work after shipping is usually boring optical housekeeping like this.

The use notes also clarify real-world range behaviour. Under the reference condition—a medium-reflectivity target such as a building wall, perpendicular incidence, clear weather and no direct sunlight—the module achieves nominal performance. The manual also points out that high-reflectivity targets such as highway traffic signs can measure farther, while low-reflectivity targets such as trees or animals measure less. Rain, fog, snow and haze will reduce range, and tripod mounting is recommended for long-distance testing.

Overall, the SPD1200M17 is best understood as a mini 905nm ranging core for civil electro-optical integration: compact enough for handheld and embedded devices, strong enough for 1200m-class daytime and 1500m-class nighttime performance, and simple enough for fast UART-based secondary development in thermal imaging, night vision, portable observation devices and civil UAV payloads. That positioning also matches how similar 905nm modules are described across current OEM search results and product listings.

SPD1200M17 Mini 905nm Laser Rangefinder Module UAV Payloads Night Vision and Civil UAV Payloads SPD1200M17 Mini 905nm Mini 905nm Laser Rangefinder Module

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