SAW-stabilized design, surface mount RF transmitter.
1. Modulation: AM. 2. SAW. 3. Frequency: 433.92MHz. 4. Encoder: rolling code. 5. Power: 3V/ lithium battery. 6. Range: 80 meters. 7. Channel: 1. 8. Case size: 3cm diameter. 9. Button shape available in round or oval. 10. With dock station. 11. Waterproof.