LRF1222C · 1.54 µm Laser Rangefinder Module
LRF1222C datasheet: specifications, range conditions, interface
Every value below is copied from the published LRF1222C specification table with its test condition, so you can compare it with other modules on equal terms.
LRF1222C key specifications
| Item | Published value |
|---|---|
| Model | LRF1222C |
| Published range | Reference target(2.3m × 2.3m) ≥12 km |
| Wavelength | 1.54μm±0.02μm |
| Interface | RS422 |
| Accuracy | ±2 m |
| Update rate | 0.5Hz ~10Hz |
| Supply | DC12 V |
| Weight | ≤335g |
| Dimensions | Ø58 × 134 mm |
| Laser safety | Class I stated in the module document. Final accessible-emission classification applies to the complete configuration. |
| Price | From $1,300 per unit |
Full specification table
ERDI published product specifications, captured 2026-10-08.
| Parameter | Published value | Condition / note |
|---|---|---|
| Laser wavelength | 1.54μm±0.02μm | |
| Module laser-safety statement | Class I stated in the module document. Final accessible-emission classification applies to the complete configuration. | |
| Divergence Angle | ≤0.3 mrad | |
| Laser Energy | ≥300 μJ | |
| Launch Lens Diameter | Ø16.5 mm | |
| Receiver Lens Diameter | Ø40 mm | |
| Measuring Range （Reflectance 30%; visibility ≥ 12 km.） | Reference target(2.3m × 2.3m) ≥12 km | |
| Minimum range | ≤40 m | |
| Measurement frequency | 0.5Hz ~10Hz | |
| Interface | RS422 | |
| Ranging accuracy | ±2 m | |
| Range Resolution | ≤0.1 m | |
| Precision Rate | ≥98% | |
| False alarm rate | ≤1% | |
| Connector / interface alternatives | J30J / RS-422 in the specification table; Molex 51021-0500 / TTL alternative in the interface section. Confirm the ordered version. | |
| Supply voltage | DC12 V | |
| Standby power consumption | ≤1.2W | |
| Average power consumption | ≤2 W | |
| Peak Power Consumption | ≤3W@10Hz | |
| Weight | ≤335g | |
| Dimension (L×W×H) | Ø58 × 134 mm | |
| Operating temperature | −40～+70 °C | |
| Storage temperature | −55～+75 °C | |
| Impact Resistance | Meet the MIL-STD-810G testing standard | |
| Vibration Resistance | Meet the MIL-STD-810G testing standard | |
| External plug-in XS3 | Model ：Molex51021-0500 | Remark |
Connector pinout
| Pin | Signal | Note |
|---|---|---|
| 1 | TTL RX | 3.3V |
| 2 | TTL TX | 3.3V |
| 3 | CTRL | 3.3V-5V power on, 0V power off |
| 4 | +12V | Power supply+ |
| 5 | GND | Power supply- |
| 1 | GND | Serial Port Ground |
| 2 | GND | 12V Input Negative |
| 3 | GND | 12V Input Negative |
| 4 | VCC 5V | 12V Input Positive |
| 5 | VCC 5V | 12V Input Positive |
| 6 | RS422 RX+ | Serial Port Receive + |
| 7 | RS422 RX- | Serial Port Receive - |
| 8 | RS422 TX- | Serial Port Transmit - |
| 9 | RS422 TX+ | Serial Port Transmit + |
Ordering the LRF1222C
The published single-unit price of the LRF1222C is $3,400, falling to $1,300 per unit at the largest published quantity band. Prices include shipping and are ordered directly from erdilrf.com. Technical questions and quantity quotes: tommy@erdimail.com. Full specification table, downloads and ordering: LRF1222C model page.
FAQ
What is the maximum range of the LRF1222C?
The published range is Reference target(2.3m × 2.3m) ≥12 km. A range figure is only comparable together with the target and conditions it was measured on, so the condition is listed next to the value.
Which interface does the LRF1222C use?
The published communication interface is RS422.
What laser wavelength does the LRF1222C use?
The published wavelength is 1.54μm±0.02μm; laser safety entry: Class I stated in the module document. Final accessible-emission classification applies to the complete configuration..
How much does the LRF1222C cost?
The published single-unit price of the LRF1222C is $3,400, falling to $1,300 per unit at the largest published quantity band. Prices include shipping and are ordered directly from erdilrf.com.
Related guides
Model records
Open the model page for the full specification table, downloads, published price and ordering.
- LRF1222C — LRF1222C 1.54 µm Laser Rangefinder Module