Power supply: DC 12 V or Battery DC 12v 
Maximum load: 100w 
Load current: 10A  
Dimensions: 60 x 45 x 31 mm 

What is a dual power automatic switch?
The purpose of the dual power automatic transfer switch is to use one way of normal power one way of reserve power. When the normal power supply suddenly fails or the power is cut off, the dual power supply automatic transfer switch is automatically put into the reserve power supply to make the device continue to operate normally. When the normal power supply is normal, it will automatically switch to the normal switch regardless of whether there is any power in the spare. If there is power at both ends, the normal power supply will be the main one.

poultry hatching, routers, oxygen supply, pumps, etc. Need 24 hours of uninterrupted work. 
Dual power automatic switching system
Suitable for 12V battery, maximum power 100W
Charging indicator (first light): This light illuminates when the battery needs to be charged;
Full charge indicator light (second light): This light is on when the battery is full;
Power indicator (third light): This light is on when external DC12V is connected;
Output indicator (fourth light): light is on to indicate voltage, and light is off to indicate no voltage
Power terminal: connect 12v adapter, red is connected to positive pole, black is connected to negative pole;
Battery end: connect 12v battery, yellow to positive pole, black to negative pole;
Output: connected to the load, such as routers, small fans, pumps, etc.

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