KNZD-56 emergency sos phone
We are the manufacturer of Emergency telephone anti-explosion-proof weatherproof handset Vandal resistant access control for with touch keypad for villa door phone system .This phone can compatible with most of the analog or digital telephone program-controlled switches,suitable for various work environment of communication,can realize the point-to-point (single bond) calls with public or private network
Sending Loudness Rating: ≥+2dB ≤+12dB
Accept Loudness Evaluation value: ≥-8dB ≤-1dB
STMR: ≥+3dB ≥+10dB
1.Auto-dial function: press the emergency button, after 3 ~ 5 seconds will automatically connect to the specified number for you
2.Switch monitoring screen: press the emergency button, it will produces a switch signal,the main monitoring will switch to the emergency call position
3.Call flash hints: when there is an incoming call,high brightness leds start flashing, suggesting there’s phone come in.
4.Talk time limit: Automatic timing starts 7 minutes as answered the phone,automatically hang up when time’s up,prevent long time calls occupy line resource (the factory preset functions).
5.Auto Hang Up: After calling hang up,busy signal detected,automatically terminated.
◆ Fixed Dialing Numbers
◆ Switch to monitor screen
◆ Call flash hints
◆ Talk time limit
◆ Auto Hang Up
◆ High waterproof and dustproof performance, entire SUS304 stainless steel casing, protection reach IP54.
◆ High durability, wire adopts teflon wire, oil resistance, acid resistance, alkali resistance, resistance to strong oxidizer accord with the requirement of military industry standard GJB - 773 and UL1332.
Certification:EMC: EN50121 (Railway application- ElectromagneticCompatibility)
Relative humidity: 10%~95%
Atmospheric pressure: 6~106 Kpa
Environmental noise: ≤70dB(A)
Ringing sound level: 75db~80db（A）
Dial pulse intermittent than: 1.6±0.2︰1.0
Dial pulse speed: 10±1 time/s
Dual tone multi-frequency (DTMF) dialing
Frequency offset: ≤1.5%;
Level of low frequency component: －9±3d B
Level of high frequency component: －7±3dB
High and low level difference in the frequency combination: 2±1dB
Harmonic and total distortion at least lower than the fundamental level: 20dB
Call transfer index: (5Km) SLR≤12 , RLR≤－1,STMR≥10, input impedance: 600Ω
This telephone is applicable to highway customer center, railway stations, airports, docks, Banks, residential area, gym, shopping mall, production workshop