Wireless Water Detection Puck Sensor, Black

ALTA® Wireless Water Detection Puck Sensors report the presence or absence of water. The convenient water-tight puck design allows the sensor to be placed anywhere it's dry or wet. Note: water levels must be ~ 1.6mm high to trigger detection Features of Monnit ALTA Sensors: - Wireless range of 2,000+ feet through 18+ walls - Frequency-Hopping Spread Spectrum (FHSS) - Best-in-class interference immunity - Best-in-class power management for longer battery life - Encrypt-RF ® Security (Diffie-Hellman Key Exchange + Advanced Encryption Standard (AES)-128 Cipher Block Chaining (CBC) for sensor data messages) - Sensor logs 2000 to 4000 readings if the gateway connection is lost (non-volatile flash, persists through power cycling): - 10-minute Heartbeats = ~ 22 days - 2-hour Heartbeats = ~ 266 days - Automatic over-the-air updates to sensor firmware (future-proof) - Free iMonnit Basic Online Wireless Sensor Monitoring and Notification System to configure sensors, view data, and send alerts via SMS text, email, and voice call Specifications of Monnit ALTA Sensors: Detection Requirements: -Input impedance 2.5 MΩ -Maximum medium impedance 900.0 kΩ (Clean water has a typical impedance of 50 to 200 kΩ )  Puck: -Dimensions: 75mm (diameter), 25mm (height), 30mm (height with rubber feet) -Enclosure material: Vulcanized rubber -Water protection: Completely sealed, waterproof, fully submersible -Water detection minimum height: 1.6mm (1/16") -Weight: 7.6 ounces -Battery: 3.6V 750 mAh Lithium (non-replaceable) -Expected battery life: 10 years at a 10-minute Heartbeat -Operating temperature range: -40°C to 85°C (-40°F to 185°F) ALTA Wireless: -Data logging: Sensor logs 2000 to 4000 readings if gateway connection is lost (non-volatile flash, persists through power cycling): 10-minute Heartbeats = ~22 days - 2-hour Heartbeats = ~266 days -Wireless protocol: ALTA Proprietary Frequency-Hopping Spread Spectrum (FHSS) -Wireless transmission power: (EIRP) 50 mW (900MHz), 25 mW (868 MHz), 10 mW (433 MHz) -Wireless range: 2,000+ ft. through 18+ walls with the ALTA XL -Security: Encrypt-RF General: -Battery voltage range: 2.0 to 3.8 VDC -Operating altitude (non-pressurized): -15.2 to 1,982 m (-50 to 6,500 ft) -Storage altitude (non-pressurized environments): -15.2 to 3,048 m (-50 to 10,000 ft) -Operating humidity: 5 to 85% RH (non-condensing)