- Jack Diameter6mm
- Ring Sound level70 db(A)
- Frequency Range300-3400Hz
- Voice Distortionless than 10%
- Supply TypeManufacturer, Exporter, Supplier, Retailer
- Preferred Buyer Location All over the world
FIRE TELEPHONE * Easy to insert mobile handset* Compatible with GST Fire Telephone Jack  Operating Current : 17~31mA* Operating temperature : 0C to +40O C* Relative humidity : 95%* Application : Indoor use* Material and colour : ABS, red* Wiring : 1 pair polarized  Â