1. Robust aluminum alloy die-
cast body, Vandal resistant and
tamper-resistant hardware, and
simple installation. 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. 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. 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
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