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By certification 
11.Brightness and talk volume are adjustable
12.BL-5J battery of camera and monitor is replaceable and rechargeable;
13.Outdoor camera has two work modes:
1) Plugging in the power adaptor.
2) Using battery, it can works about 15 days.
14.With Wireless unlock control ,Tamper alarm function;
15.One outdoor camera supports up to 3pcs indoor monitors and vice versa;
16.The outdoor unit with the function of tamper alarm, and if you keep pressing outdoor calling key more than 5 seconds, will turn off battery battery’s power, once again turn on power.
12.BL-5J battery of camera and monitor is replaceable and rechargeable;
13.Outdoor camera has two work modes:
1) Plugging in the power adaptor.
2) Using battery, it can works about 15 days.
14.With Wireless unlock control ,Tamper alarm function;
15.One outdoor camera supports up to 3pcs indoor monitors and vice versa;
16.The outdoor unit with the function of tamper alarm, and if you keep pressing outdoor calling key more than 5 seconds, will turn off battery battery’s power, once again turn on power.
