The Monnit Coin Cell Wireless Resistance Sensor (MNS2 - 9 - W1 - RS - ST - L03) is engineered to measure resistance across any passive load, making it ideal for various applications. With a height of 0.9 inches and a width of 1.1 inches, this sensor is compact yet powerful. It features a wireless range of over 2, 000 feet, allowing for seamless integration into larger systems. The sensor utilizes Frequency - Hopping Spread Spectrum (FHSS) technology for enhanced interference immunity and is equipped with best - in - class power management to ensure longer battery life. It can log between 2, 000 to 4, 000 readings if the gateway connection is lost, ensuring data persistence even during power cycling. The device supports automatic over - the - air updates to its firmware, ensuring it remains future - proof. Additionally, users can take advantage of the free iMonnit Basic Online Wireless Sensor Monitoring and Notification System to configure sensors, view data, and receive alerts via SMS, email, and voice calls.