For the one-way Di-DiDa alarm device programming, can follow below programming instruction steps.
1. Press receiver "Signal" button until the LED light turns on;
2. Press red call button once to pair with the receiver (be sure to remove plastic battery protector tab by opening the call button with an included screwdriver);
3. The red light will flash to confirm successful pairing;
4. The receiver will automatically exit pairing mode;
5. The system is ready to use. Repeat process if call button and receiver lose connection