Feature: 1. [Simultaneous Testing] This PON power meter allows for synchronous testing of the power of three wavelengths in the PON system, with resolution of 0.01dB. 2. [Color LCD Touch Screen] The device is equipped with LCD touch screen that displays tested results in true colors, providing a clear and intuitive user interface. 3. [Long Battery Life] Powered by 3.7V 6600mAH lithium battery, this power meter offers an extended working time, ensuring uninterrupted testing. 4. [Handheld and Portable] Designed as a handheld tester, this PON power meter is compact and lightweight, making it easy to carry and use in various testing scenarios. 5. [User Friendly Operation] With intuitive screen and convenient key area, this power meter is easy to operate, ensuring convenient and hassle free operation for users. Specification: Item Type: PON Optical Power Meter Material: ABS Uncertainty (dB): ±0.5 Polarization Related Loss (dB): <±0.25 Linearity (dB): ±0.1 Penetration Insertion Loss (dB): <1.5 Resolution: 0.01dB Unit: dBm/xW LCD: 480x800, True Color Touch Screen Battery: 3.7V 6600mAH Lithium Battery (Built in) Working Temperature: -10℃ to 60℃ Storage Temperature: -25℃ to 70℃Standard wavelengths1310(upstream) 1490(downstream) 1550(downstream) Pass zone(nm)1260-1360 1470-1505 1535-1570 Range(dBm)-50~+10-50~+10 -68Isolation at 1310nm(dB)>40>40Isolation at 1490nm(dB)>40 >40Isolation at 1550nm(dB)>40>40 . Package List: 1 x PON Power Meter 1 x Rope 1 x Carrying Case 1 x Charger 1 x Data Cable 1 x CD Manual 1 Pack x Cleaning Swabs