Greenlee®Power Requirements: Transmitter - (8) AA batteries; Receiver - (1) 9V batteryBattery Life: Transmitter - 30 hours; Receiver - 10 hoursTransmitter: 447.5 kHz, 40Vp-p (140mW) maxVoltage Protection: 240 VAC/500 VDCAutomatic Shut Off: 90 min (Transmitter & Receiver)Construction: Powder-coated aluminum (Transmitter/Receiver); Vacuum-formed polyethylene (Case)Dimensions & Weight: Transmitter - 4.25" x 3" x 3.25"; Receiver - 32" x 2.75" x 4"; Case - 33.5" x 8.25" x 3.75"; Total weight - 6.7 lbs (complete kit) SKU: GRNL.501 Brand: GREENLEE Country of Manufacture: United States Supplier Part Number: GRNL501