2. Can use in a strong noise environment
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.
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. Noise-Canceling Microphone option is recommended for loud environments.
8. Handset integrity wiring to enable the telephone system to check if the telephone unit is still operational.
7. Noise-Canceling Microphone option is recommended for loud environments.
8. Handset integrity wiring to enable the telephone system to check if the telephone unit is still operational.
9. All of the components including keypad, buzzer, circuit board and cabinet are designed to be multi - layer waterproof and dust - proof which is up to Class III grade. The whole machine is up to national standard GB4208-93 IP 66.
10. Phone is provided with high stability, high anti-jamming capability standard to GB/T 15279-94.
11. Ingress Protection: GB4208-93 IP66 EMC: EN55022/EN55024/EN50121-3-2:2006 FCC
