- Frequency Range300 to 3400hz
- Ring sound>70dBA
- Supply TypeManufacturer, Exporter, Supplier, Retailer
- Preferred Buyer Location All over the world
* Fixed extension of fire telephone System* Box for total protection.* Wall Mounted and easy installation Operating temperature :Â -10OÂ C to +40OÂ C*Â Relative humidity :Â 95%*Â Application :Â Indoor use*Â Material and colour :Â ABS,white, red*Â Wiring :Â 1 pair polarized*Â Dimensions :Â 234 x 146mm x 60m Â