1.digital signal transmission No interference, no noise Makes a clear and loud reminder sound Find the target line quickly. 2.Efficient live line hunting Support 60V POE line search. 3.Network line sequence proofreading 9 alignment test lights make alignment easy (G light is a shielded wire test light).<br><br>Hunting function:Available line types: RJ45, RJ11 Alignment function:Detect cable open circuit, short circuit, line sequence Check status within the switch hunt signal:digital signal Transmitting signal distance: 300 meters working temperature:0-40℃, maximum 80% relative humidity (non-condensing) storage temperature:-10-50℃ maximum 80% relative humidity (The product appearance and printed words depending on the batch, but this does not affect use) Color: As shown Material: ABS<br><br>Package Contents: 1 x transmitter 1 x receiver<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.