KNZD-27 is a professional telephone for inmate telephone calls. 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.
Main Product features
1.Cold rolled steel body,solid and temperature bearable.
2.High durability,oil,acid,alkali resistance,conform to the standards of GJB-773 and UL1332 requirments.
3.Highly integrated mainboard, using the most advanced industry-specific microcontroller made in ATMEL company.
4.The box with earting device is completely isolated with internal electric circuit,and has certain electromagnetic shielding effect.
5.Concersation with clear loud voice,no feedback screaming.
6.Support hotline of exchange system.
7.Support the function of exterior line automatic lift
8.Support conversation time limted.
9.Strong,thick and beautiful body with embed wall design.
1.Well treated PCB used inside the phone.
2.Robust screw terminals used for the connection of ringer,handset,line in,hookswicth.
3.Selectable 7 minute time out,to relese the line if the handset is left off hook.
4.All connectors be greased in production.
1.Kirk electro dynamic transducer for both handset transmitter and receiver.
2.Spring cable or armoured cable to attach the handset to the telephone main unit.
3.Stainless steel cable to connect exchange.
4.Inductive couoler fitted for hearing aid compatability.
5.Handset integrity wiring to enable exchange to check if the phone is still operational