Description: Stable and reliable performance, high receive sensitivity. Easy to install and use. The wireless signal can pass through walls, floors and doors. Suitable for all using 5V high level signal or low level signal driving equipment system. Compatible with common used 433M remote control (such as 2260, 2262, 2264, EV1527 etc.) Learning Method: A: After energizing, pressing learning button, learning indicator light flashes 1 times, release the button, then pressing learing button on the remote control that you want to learn. The learing indicator light flashes 3 times means the first channel learn sucessfully. B. After energizing, pressing learning button, learning indicator light flashes 2 times, release the button, then pressing learing button on the remote control that you want to learn. The learing indicator light flashes 3 times means the second channel learn sucessfully. C. After energizing, pressing learning button, learning indicator light flashes 3 times, release the button, then pressing learing button on the remote control that you want to learn. The learing indicator light flashes 3 times means the third channel learn sucessfully. D. After energizing, pressing learning button, learning indicator light flashes 4 times, release the button, then pressing learing button on the remote control that you want to learn. The learing indicator light flashes 3 times means the fourth channel learn sucessfully. Working Mode: interlock mode: blackout state, pressing learing button and then energizing, the learing indicator light flashes 1 times then release. self-locking mode: blackout state, pressing learing button and then energizing, the learing indicator light flashes 2 times then release. jog mode: blackout state, pressing learing button and then energizing, the learing indicator light flashes 3 times then release. Specification: Material: FR4 glass fiber board Receiver Size: approx. 26 x 23 x 12mm/1 x 0.9 x 0.5inch Remote Controls: 5.8 x 3 x 1.3cm/2.3 x1.2 x 0.2inch Working frequency: 433MHZ Working voltage: 4.5-5.5V Channel: 4 (can study independently) VCC: positive pole GND: negative pole Output mode: low level output(default); pressing the remote control button to output high level. Maximum current output: Within 10MA/per channel Quiescent curren: about 3mA Receiving distance: 15-50M Working mode: self-locking, jog, interlock work instruction: work instruction: D1 (Study indicator light and receive signal indicator light) Output level: output high level equals or slightly less than VCC voltage(level and voltage are completely different) Package Includes:(2 Pack) 1 Piece Remote Control Transmitter with Antenna 1 Piece Receiver