Digital input expander Expander 4xDI 1W-UNI, 4 dry contact inputs, RJ11 1-Wire UNI connection - HW group 600546

When a monitoring unit has no free digital inputs left, the Expander 4xDI 1W-UNI puts 4 more dry contacts on the existing 1-Wire UNI bus. It draws its power straight from the RJ11 line at 5 V and just 10 mA.

Benefits

• 4 extra contacts: door contact, smoke detector or push button on one RJ11 connection.
• Per-input alarms: alarms can be configured separately for each of the 4 inputs.
• No separate power supply: powered from the 1-Wire bus at 5 V with 10 mA consumption.
• Works alongside sensors: shares the 1-Wire UNI bus with other sensors, and several expanders can be daisy-chained.
• Wide temperature range: operates from -30 to +85 °C at 0 to 100 % RH.

Applications

• Door contacts on server racks and plant room doors
• Smoke detectors with dry contact output in server rooms
• Push buttons and signal contacts in distribution boards and plant rooms

Compatibility

• HW group devices with a 1-Wire UNI bus (RJ11), can be combined with other sensors on the same bus