Wire Tracker, ELEGIANT RJ11 RJ45 Cable Tester Line Finder Multifunction Wire Tracker Toner Ethernet LAN Network Cable Tester for Network Cable Collation, Telephone Line Tester, Continuity Checking Operating temperature: 0-40 degrees Celsius, maximal 80 percent relative humidity (non-condensing) Storage temperature: -10 -50 degrees Celsius, maximal 80 percent relative humidity (non-condensing) Altitude: less than 2000m Anti-explosion rating: IP40 Distance of emitting signal: 300m or so Emitter battery: 6F 22/9V (not included) Receiver battery: 6F 22/9V (not included) Product weight: 0.180 kg Package weight: 0.270 kg Product size: 20.00 x 4.00 x 3.00 cm / 7.87 x 1.57 x 1.18 inches Package size: 22.50 x 12.20 x 4.70 cm / 8.86 x 4.8 x 1.85 inches 1 x FWT11 Emitter 1 x FWT11 Receiver 1 x Clip Adapter Cable 1 x RJ11 Adapter Cable 1 x User Manual Telecommunication network, line engineering and routine aintenance Computer network line engineering Other metal wire wiring works and maintenance work Education Home appliance Industrial Market Office Supermarket Do not use on a line with a strong current Remove the battery when you don&#039;t use it for a long time Never use it during a lightning storm Use a standard 9V alkaline product battery or 9V charging battery Storage Dust-proof and moisture-proof