Features: The optical power meter provides seven kinds of test wavelengths to meet different needs. Compatible with SC/FC interface, easy to operate. Automatic shutdown after standby for 10 minutes, energy-saving, long endurance time. The red pen adopts high-performance probe, stable and strong penetration effect. Standard 2.5mm interface, support FC/SC/ST. Push-type button, one-key to operate. Portable handheld design, not occupy much space, easy to carry and use. Specification: [Optical Power Meter] Power measurement range: -70~+6dBm Probe type: InGaAs Wavelength range: 800~1700nm Standard wavelength(nm): 850/980/1300/1310/1490/1550/1625 Display resolution: Linear display: 0.1, Logarithmic display: 0.01dBm Automatic shutdown time(min): 10 minutes Battery: 3*AA batteries Operating temperature: -10~+60℃ Storage temperature: -25~+70℃ Item size: 19 * 10 * 5cm /7.48 * 3.94 * 1.97in [Red Pen] Output power: 10mw/30mw(optional) Wavelength: 650nm Universal interface: 2.5mm(FC/SC/ST) Battery: 2*AA batteries Item size: 17.5 * 2.6cm /6.89 * 1.02in Packing list: 1 * Optical power meter 1 * SC adapter 1 * FC adapter 1 * Optical fiber tester 1 * Storage bag 1 * Lanyard 2 * User manual 5 * AA batteries