Catalog > Consumer Electronics > Security & Alarms > INTEGRA Products Catalog > Consumer Electronics > Security & Alarms > Access Control > Intercom Systems INTEGRA AP-ASU Audio Door Phone INTEGRA Audio Phone - Audio Slave Unit Part No: INTEGRA AP-ASU 116.38 ZAR inc for 1 Each (Quoting) Add to Cart Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Overview 2 of these Audio Phone Slave units can be added to INTEGRA KIT 1AP-1/3ASU. The Audio Phone can have a total of 3 Indoor Handsets and one Outdoor Doorstation. Specifications Indoor :Power Supply : 119~240ACV 50/60HZ automaticVolume of buzzer : 80dB ±2 @ 1mRoom Temperature : -10~+60°CHumidity : 10%~90% no condensingDimension : 188x82x56mmPower Consumption : 5WCabling :Before installing the product, check the distance between indoor and outdoor and choose the most suitable cable for your installation according to the specification below:0.4mm2 mm2 up to 30m0.5mm2 up to 50m0.75mm2 up to 100m1.5mm2 up to 200mTo install the lock, always use 1.5mm2 cable for distances up to 50mTo connect the outdoor station to the indoor phone, use 1.52 cable