Wireless Sensor 1 Bilge, Voltage, Current, Rate Activation, High Water Alarm & Oil/Fuel Alarm1 bilge pump, pump voltage & current, pump activation rate, high water, oil alarm Specifications:Status LEDs: Blinking green — Power ON / Intermittent blue sensor — Sending dataOperating Voltage: 9 – 30 VdcRange: Up to 300 ftPower Consumption: 11 mA @ 12 VdcBattery (Back Up) — Optional: 1,100 mAh / Lithium Thionyl ChlorideBattery Backup Time: Up to 100 hrsWireless Frequency: 900 MHzEnclosure: IP-66 Rated ABS PlasticOperational Temperature: -22°F – 167°F / -30°C – 75°CHumidity: 95% R.H. @ 122°F / 50°C non condensingCompact Size: 4 in x 2.75 in x 1.6 in / 102 mm x 70 mm x 40 mmLight Weight: 5 oz / 141 gramsCertifications: FCC, CE