Features:
1) With the two-bus technology, the power supply and communication are compatible on two buses, and are not divided into the positive and the negative, convenient for debugging.
2) It has perfect detection measures, which can detect the short circuit and open circuit of the bus, and make sound and light alarm.
3) The anti-interference performance of hardware and software allows for the adaptability to various complex environments.
4) The voice is subject to differential transmission on the bus, with strong anti-interference capability.
5) The application of silica gel button presents a beautiful appearance, good hand feeling and long service life.
6) The host and extension can call each other and make full-duplex call, and the host can communicate with three extension telephones at the same time.
7) It has the function of recording and displaying the calling and answering time, and can query 120 records of calling and response time between the host and the extension.
8) The recording is subject to circular coverage, first-in-first-out mode and automatic recording is enabled during a call.

1. Maximum power output: 350Watt.
2. Speaker driving mode: constant voltage.
3. Evacuate message up to 1 minute.
4. Background audio: USB2.0.
5. Complies with EN54 part 16.
6. Network function （work with AW-FP300 series addressable fire alarm control panel）
6.1 Maximum 15 pcs AW-VP350 can be connected with 1 pcs AW-FP300 addressable fire alarm control panel.
6.2 Each AW-VP350 panel can be programmed to maximum 20 channels and controlled by AW-FP300 addressable fire alarm control panel.

Big ceiling speaker big
Diameter:213mm
Thickness: 65mm
Ceiling hole::170 mm
Power:6-10W
Voltage: 70/110V
Frequency response:100-16kHz
Sensitivity:90dB
Loudest pressure level (1m):95dB
Speaker:6.5inch
Shell material: ABS
Weight: 1.3kg