This is a very compact remote on/off switch for models that are more limited in space. Unlike the larger 15A remote switches, this version is compatible with voltages from 4.5 all the way to 12V. 
 
Specifications:
Working Voltage: DC4V 12V(DC4V 4.5V 5V 6V 7.4V 9V 12V)
Standby Current: 7-9mA
Working Current: 70-130mA
Max Load: 10A momentary (7A continuous)
Size: Approx. 43 x 30 x 22mm with case
Size (board only): 24 x 34 x 15mm
Remote Size: Approx. 60 x 30 x 12mm  
 
Wiring instructions (see diagram in product photos above): 
GND: Connect your main power ground and output power ground to this terminal
VCC: Connect your main power positive wire to this terminal
NC: unused
COM: Connect your main power positive wire to this terminal
NO: Connect your output power positive wire to this terminal
 
Once you power up the switch, press the setup button until you get three flashing lights. This puts the unit into latching mode. The output will turn on with the remote button press, and stay on until the button is pushed again.
 
As supplied, the unit is in momentary mode (power only when remote button is pushed).