Type of programming: Programming with the receiver Frequency: 433.42 MHz Code: Rolling Code Buttons: 2 Battery: Includes battery Features: When your remote control is lost, you can purchase this remote control and pair it with your receiver. After successful programming, you will have a fully functional replacement remote control. Compatible Models: 2 / NS 4 Remote control access to receiver required. Please ensure you have access to your receiver or opener before purchase. How to program: 1. Press and hold the PROG button on the receiver for 2 seconds until the indicator light comes on to enter programming mode. 2. Briefly press the PROG button on the back of transmitter A or the button to store on transmitter B; the indicator light will flash. Note: It is possible to enter programming mode using a remote control already stored on the receiver by pressing the PROG button on the remote until the indicator light comes on, then store a new transmitter. Color: Black Material: Plastic Package Contents: 1 x Remote Control Note: Light reflection and different display settings may cause slight variations in the color of the item in the picture compared to the actual product. Measurement error allowance is +/- 1-3 cm.