A bright flashing LED and loud pulsating beeper indicate local continuity Remote continuity with the use of the remote probe Flashing remote probe - two lead, bi-color (red/green) LED probe allows a single user to identify up to three wires or cables at a time Lightweight and pocketsized, clips on and hangs from the cable(s) under test without falling off Great for Electricians and Helpers, Cable TV and Audio System Installers, Alarm Technicians, Plumbers, HVAC Installers etc. Specifications Weight 260g (9.2oz) Power supply 9 Volt Battery Dimensions 90 x 57 x 29mm (3.6 x 2.2 x 1.14in) Continuity Drive current Pulsed (2.0 Hz) 20 - 50mA at 10 Ohms and 2.0mA - 8.0mA at 1000 Ohms. Wire Verifiction Distance 10,000 ft., 3,000 m (26gage min.) Operating Temp -12 to 45"C (10"F to 113"F) Storage Temp -20 to 80"C (-4 to 176"F) Fuse 250V 0.5A Operating Humid 10 to 90% RH (non-condensing)