Gardner Bender Circuit Breaker Finder Locates AC circuits quickly and easily. Simply plug the transmitter into a wall outlet on the circuit you are trying to locate, then run the receiver over the circuit breakers or fuses in your load center. Receiver will beep and flash when the correct circuit is located. No need to interrupt power. Does not interfere with sensitive electronic equipment. Receiver uses one 9V battery not included . UL listed. Battery Type 9V, Batteries Included No, Voltage 80V to 140V, Pkg Qty 1, Package Type Clamshell WARNING This product can expose you to chemicals including DEHP which is known to the state of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov