Features: Works perfectly when RJ11 RJ45 cable is powered. Traces RJ11, RJ45, cables or other metal wires (via adapter). Easily and quickly locates breakpoints without opening the wire's cover. Enables network cable collation by identifying short circuits, open circuits, breaks, and crossed lines. Tests line level, positive and negative polarity. Checks telephone line status including idle, ringing, and off-hook conditions, and identifies TIP and RING lines. Verifies wire continuity. Specifications: Color: Blue Material: Plastic Operating Temperature: 0–40°C, up to 80% relative humidity (non-condensing) Storage Temperature: -10–50°C, up to 80% relative humidity (non-condensing, battery removed) Altitude: Up to 2000 meters Ingress Protection Rating: IP40 Signal Transmission Distance: 100 meters Battery (NOT Included): Emitter: 1 x 6F22/9V Battery Receiver: 1 x 6F22/9V Battery Emitter Dimensions: 12.6 x 6.4 x 3 cm / 4.96 x 2.52 x 1.2 in Receiver Dimensions: 20.5 x 4 x 3 cm / 8.07 x 1.57 x 1.2 in Package Dimensions: 22 x 10.5 x 3.5 cm / 8.66 x 4.13 x 1.4 in Package Weight: 240 g Package Contents: 1 x Emitter 1 x Receiver 1 x Clip Adapter Cable 1 x RJ45 Cable 1 x User Manual (English)