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1. 40 denfese zones alarm system

Parameter:

1. Standard frequency of double audio frequency: low frequency
group 697,770,852,941Hz; high frequency group1209,
1336,1477,1633Hz; frequency deflection: <1.5%.
2. Electronic lever: low frequency group--9dbm ...

2. GSM alarm with LCD display

Parameters:

(1)Power supply: 110-240V. Built-in lithium battery.
(2)Environmental condition:
Temperature:cold 10 to 50 centgrade degree
Relative humidity:under 90 percent
Atmosphere pressure::86 to 106Kpa
(3) Alarm incept ...

3. GSM alarm system

Parameter:

Power supply: Input AC 110V; 220V; 230-240V; Output DC 9V, 300mA
Build-in transmitter: 315MHz/433MHz
Frequency: 900/1800/1900 MHZ
Stand-by current: < 20mA
Alarm current: < 150mA
Operating range: up to 150 ...