Just plug the transmitter into an outlet and the receiver will find the corresponding breaker. The red LED indicator on the generator verifies that the socket has been energized before the detection and when the LED is off, it confirms that the correct breaker has been turned off. 

FEATURES AND BENEFITS:

• Protect Electrical Circuit - By using a transmitter and receiver, this circuit breaker finder quickly and easily identifies individual branch circuits at the panel box without interrupting power. It is the best way to accurately locate circuit breakers.
• Adjustable Sensitivity Design - This circuit breaker tester adopts adjustable sensitivity design, the sensitivity can be controlled using the on/off switch.
  
• With Audible Beeping & LED Indicator - This circuit breaker tester with features visual flashing light and an audible beeping to alert you when the correct breaker is identified. The operator can identify the state of the connection of the circuit according to 3 LED light.
  
• Wide Range of Application - Professional tool for house, office, factory power network reconstruction,

  microprocessor-controlled, durable, and dependable. 

PRODUCT SPECIFICATIONS:

• Receiver:
  Type: UT25A / B
  Operating Voltage: 90-120V
  Operating Frequency: 50-60Hz
  Power Supply: 1 x 9V Battery(Not Included)
  Operating Temperature: 5℃-40℃
  Storage Temperature: -20℃-60℃
• Transmitter:
  Working Voltage: 110-125V
  Operating Frequency: 50-60Hz
  Fuse: 1A, 250V, 4x11mm(dia)
  Receiver Size(appr.): 19 x 5 x 3cm / 7.5 x 2.0 x 1.2"