In the PON network, by extracting a small part of the optical signal online, the PON power meter can be car-ried out in the whole FTTx service opening, maintenance and detection stage, which can reliably verify and to meet the requirements of network communication. It can test the optical power value of voice, data and video signals at the same time, and give the warning of exceeding the threshold. It is an perfect choice for engineering, construction and maintenance.<br> Model: TM581 PON Power Meter<br> Wavelength(nm): 1310±50nm/1490±15nm/1550±10mm<br> Measurement Range (dBm): -35~+10DBm; -40~+12DBm; -40~+25DBm<br> Uncertainty: Less than ±0.5dB<br> Insertion Loss: Less than ±1.5dB<br> Detector: InGaAs<br> Display Resolution: 0.1dB<br> Fiber Type: SM 9.125 μ m<br> Threshold Setting: 10groups<br> Optical Connector: SC/<br> Display:Color LCD<br> Exter Storagar:10<br> Data Interface:Micro-USB<br> Power Supply:Three 1.5V AA Batteries (Battery not included)<br> Battery Lif: Standby 20h; Measuring time 12h<br> Operating Temperature(°C):-10 ~ +50°C<br> Storage Temperature(°C):-40 ~ +70°C<br> Relative Humidity: 0 to 95% (non-condensing)<br> Dimension(mm):186x100x50mm<br> Weight(g):about 150g<br> Package Included: TM581 Power Meter,USB Cable,Oxford Soft Case<br> Note: Battery is not included.<br> Colour:As Shown<br> Material:ABS<br> Package Contents:<br> 1 set x fiber light meter<br> Only the above package content, other products are not included.<br> 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.