1. 433MHz wireless reception: supports learning mode, compatible with multiple remote control signals 2. Three working modes: inching, self-locking, and interlocking are optional to meet the needs of different scenarios 3. High-sensitivity reception: remote control distance up to 15-25 meters, strong wall penetration performance, stable signal 4. Multi-channel control: supports 4-channel output, flexible configuration, to meet diverse needs 5. pairing: indicator light prompts pairing status, quickly complete remote control binding Product name: 4-channel wireless learning module remote control Working voltage: DC 3-5V Working frequency: 433MHz (learning type) Remote control distance: 15-25 meters (can penetrate walls) Wiring method: (+) connected to the positive pole of the power supply (-) connected to the negative pole of the power supply; ABCD represents 1-4 outputs Output method: When the module is powered on, the default output of 4 channels is low level; when the remote control signal is received, the output becomes high level; (short-circuit the J1 position on the module, the module can be set to the default output high level) Color: Black Material: plastic Package Contents: 1 x Remote control 1 x Learning code decoding receiver module 1 x Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.