1Simple operation, PON light source is suitable for various test environments, absolute power dBm and relative dB display. 2With soft rubber protective sleeve, anti-fall and wear-resistant. 3Handheld stable light source optical power meter, high precision. 4The PON light source is 1310/1490 / 1550nm, and the conventional wavelength is 1310-1550nm. 5Specify a standard operating wavelength into the range from min to maximum in this wavelength range designed optical power meter can work under the specified index. Item Type: Light Source Optical Power MeterConventional Wavelength: 1310-1550nmPON Light Source: 1310/1490 / 1550nmProbe Range: IngaAsOutput Optical Power: -7 / -7Connector: SCModulation: CW / 270 / 1K / 2KWorking Temperature: -10 60 Storage Temperature: -25 70 Automatic Shutdown Time: 10minPower Supply: 3 x AA batteries (without batteries) 1 xOptical Power Meter1 x Adapter1 x Shoulder Strap Accessories1 x Cloth Bag 1. Avoid looking directly at the output port when working, the laser will hurt your eyes.2. If you don't use it for a long time, please use a dust cap to protect the output port3. Don't use it for a long time, please remove the battery in time to avoid damage to the battery shrapnel4. Do not disassemble the meter by yourself to avoid more serious failures