Prison Telephone KNZD-27 GSM-C
KNZD-27 is a professional telephone for explosion-proof prison telephone. prison phone calls usually need absolute strongest phone.People put money on phone for inmate to make phone calls inside the jail.KNTECH is prossional communication system provider for inmate phone service.KNTECH manufacturing inmate telephone system include IP PBX and inmate phone.
1． Main body with whole stainless steel body, solid and temperature bearable
2． Handset free, loudspeaker,
3． Heavy duty Vandal resistant buttons.
4． Well treated metal keypad against rust and corrosion
5． Resume lightning proof protection automatically standard to ITU-T K21
6． Waterproof grade about IP65
7． The metal shell is provided with grounding connection device and is absolutely insulated with inner circuit and electric ,then has the effect of electromagnetism shield.
8． Support hotline call, can realize ring off automatically if the other side close.
9． Totally adopt SMTC craftwork keep very good quality.
10． The design is super thin and smart. Embed style and hanging style can be chosen.
11． Every call is limited(set by five minutes),auto ring off if time exceeded. (Optional)
12． Colours: RED + Stainless steel colour, If the qty over 100pcs can be To customer specification
13 Trouble alarm send by SMS/GPRS message.
As Public telephone for indoor or outdoor, elevator phone, Taxi or bus stands or station, Highway call box. Railway, metro, ATM machines side, Tunnel, Port, Dock, Mines, Generation facilities….
A good ideal telephone for use in wet or corrosive atmospheres
Telephone Unit size:
Unit Net weight: 4.2kg
1pcs in each inner CTN box,
Box size: 43.3 x 27.6 x 19.1 G.W: 6kg
4pcs in outer CTN box, size: 56.6 x 44.5 x42 G.W: 26kg
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Main technical indexes：
1. Network Interface: GSM Frequency ：850/900/1800/1900MHZ
2. Ringing: Through internal Speaker/ringer
3. Power Supply: Re-chargeable Battery powered: 9V/14Ah, Solar back-up: 12V/30W
4. Time out: selectable 0-20 minutes
5. Temperature: -20℃~ +60℃emp
6. Relative Humidity: up to 90%
7. Built-in battery standby: 21 days
8. Built-in battery talking time: 56hours