Audio door phone,RL-3212W3NV-2 Two-Wire Audio Doorphone Kit
- - Two wires non-polarity connection, easy connection.
- - Full duplex intercom.
- - Waterproof, anti-vandal, anti-oxidation and durable metal alloy panel outdoor unit.
- - Adopt high quality circuit for clear intercom voice.
- - Electric lock release function.
- - 38 pieces of melodies for you to choose. two ringing volume levels adjustable, support Do Not Disturb mode.
- - Easy to install and operate.
- - Protection against shorted wiring, ensuring no fault caused by wiring error.
- - The outdoor unit sounds ring-back tone when the call button is pressed.
- Two wires non-polarity connection, easy connection.
- Full duplex intercom.
- Waterproof, anti-vandal, anti-oxidation and durable metal alloy panel outdoor unit.
- Adopt high quality circuit for clear intercom voice.
- Electric lock release function.
- 38 pieces of melodies for you to choose. two ringing volume levels adjustable, support Do Not Disturb mode.
- Easy to install and operate.
- Protection against shorted wiring, ensuring no fault caused by wiring error.
- The outdoor unit sounds ring-back tone when the call button is pressed.
