1. Robust aluminum alloy die-cast body, Vandal resistant and tamper-resistant hardware, and simple installation.
2. WEATHER-PROOF! The highest level of waterproof in china IP67
3. Door cover: orient automatically and good self - closing, convenient for use.
4. Works with any standard telephone line. No external power or battery back up required.
5. Handset: made of special engineering plastic, high anti-knock resistance, Weatherproof, armoured cable optional.
6. Magnetic reed hook switch .
7. All components of the SPQ-FS2including the receiver, transmitter, keypad, ringer, circuit board and cabinet are designed to be multi-layer waterproof and dust proof.
8. Noise-Canceling Microphone option is recommended for loud environments.
9. Handset integrity wiring to enable the telephone system to check if the telephone unit is still operational.
10. Ingress Protection: GB4208-93 IP67 EMC: EN55022/EN55024/EN50121-3-2:2006 FCC
11. Can customize shell color
12. Can expand external loudspeaker and external warning lights