WiFi/4G Mobile Phone Used in The Undergroud Mine

1. Product use
The KTW217 mine-used intrinsically safe mobile phone is a voice-based, flexible wireless IP phone. The KTW217 mine-used intrinsically safe mobile phone can replace the current telephone platform used by coal mining enterprises or replace the cordless phone. It meets the needs of enterprises to build a cost-effective wireless phone platform, and greatly enhances the flexibility of calls, ensures that the user's cordless phone platform smoothly transforms to VoIP, and can also share an IP network (wireless local area network).
2. Features
a) Caller ID; status summary display;
b) Call waiting, call hold;
c) Has a password protection function;
d) Short message function: realize point-to-point SMS exchange and forwarding;
e) SMS group sending: realize point-to-side SMS group sending. It can be interconnected with the SMS gateway within the group;
f) Business card holder function;
g) Ringtone function: optional ringtone, built-in vibration;
h) View of recent calls: you can view missed calls, received calls, and dialed calls;
i) Attendant: transfer to the attendant number when the dialing fails;
j) One-key dialing, one-key for help: press a key to dial a number;
k) The mobile phone number supports long and short numbers, and the number adopts the locked numbering method;
l) Other functions: stopwatch, calculator, calendar;
m) Intercom function: One-key intercom or group intercom can be realized.
3. Use occasion
a) Ambient temperature: 0ºC~+40ºC;
b) Average relative humidity: not more than 95% (+25ºC);
c) Atmospheric pressure: 80kPa~106kPa;
d) Environmental noise: not more than 65dB;
e) Where there is an explosive gas mixture of methane and coal dust in the coal mine, but there is no corrosive gas that destroys the insulation.
4. Technical parameters
a) Rated working voltage: DC 3.7V;
b) Working current: ≤600mA;
c) Standby current: ≤150mA;
d) Communication protocol and access method: IEEE 802.11b/g; wifi access;
e) Working frequency: 2400MHz~2483MHz;
f) Modulation method: DSSS (802.11b) or OFDM (802.11g);
g) Wireless power: (-35~0) dBm;
h) Communication distance: ≥50m (wireless transmission between mobile phone and KT609-F mine-used intrinsically safe wireless base station)
j) Ringing loudness: ≥70dB (A).