Backlight LCD display To display optical power in mw,dB and dBm simultaneously Absolute and relative power measurement

Specification   Wavelength 650nm,850nm, 1300nm, 1310nm, 1550nm   Measurerange -70dBm~+3dBm   Uncertaindegree ±5%(-10dBm, 20±3   Differentiation 0.1~1%(linearity), 0.01~0.001dB(log)   Environment -20+50        45-90%RH   Power supply 3 AAA 1.5V   Dimension 82mm(W) x33mm (D) x175mm (H)   Weight 310g

JILONG KL-310 Power Meter