The 4-20 mA signal converter is used to integrate the unit with a 4-20 mA transmitter. 4-20 mA technology is used to communicate analog signals over long distances where electrical interference is a problem. This solution is often used in the process control industry to collect the analog values from a wide array of remote sensors.
The 8 Port Sensor Controlled Relay allows the user Remote actuation of electrical devices over Internet. It provides 8 high-power SPDT 5V relays in one array. It includes Metal Oxide Varistors (MOVs) and Snubber circuits to protect the open contact of the relays from the high voltage spikes or noise transients. It monitors the power load and accepts a control signal which is sent from the unit.
The voltage detector is used to indicate the presence or absence of line voltage. This is useful, for example to tell when the UPS is running on battery power.
The Airflow Sensor is a device that registers airflow in areas where consistent flow is needed; for example, in cabinets and racks where the consistent operation of a fan is critical to the operational safety of electronic equipment.
