LED digital Frequency meter panel cutout size: 76*39mm 5 digit 15mm led display net weight:50g LED digital Frequency meterSpecification:Display color: Red15mm bright LEDOperating temperature: 0~50Relative humidity: 20~80%Input signal amplitude:300mV~3V 3V~250VPower supply: DC5V 150mAInstall method: inlayTapping size: 76X39mmDimension:(W)79X(H)42.5X(D)25.5mm(with plug) ...