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Sensaphone remote monitoring systems can be connected to a variety of sensors and accessories to keep tabs on basic environmental conditions such as temperature, humidity and water detection, security and power failures. All of these sensors require one of four output types to work with Sensaphone devices: 2.8k, 10k, dry contact (digital), or 4-20mA (analog). In addition to monitoring those sensor outputs, some Sensaphone devices can monitor pulse counts and runtimes — useful capabilities for water/wastewater and HVAC applications.