Curtis 24/36V Battery Gauge Hour Meter

Battery charge status display, three-color LED.
Hour meter: 6-digit LCD display, 5 mm high resolution.
Hour meter 99,999.9 hours.
Panel outside diameter 52mm.
Operating temperature -40°C - +65°C.
Storage: -50°C - +90°C.
Humidity 95 % RH (non-condensing) at 38 °C.
Shock & 2,2 G, 20-200 Hz; 20 minute cycle.
Vibration X,Y,Z, 13 cycles each.