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Dry Contact Relay

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Dry Contact Relay – USB

$75.00

Dry Contact Relay – USB is build for automation. This USB based device has 4 input and 4 outputs (relays). Typically the Dry Contact Relay – USB is used for access control and fire/alarm systems. It’s built for a DIN-rail mount. Multiple Dry Contact Relay – USB devices can work together, controlled by a single controller.

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Product Description

Dry Contact Relay – USB is build for automation. This USB-based device has 4 input and 4 outputs (relays). Typically the Dry Contact Relay – USB is used for access control and fire/alarm systems. It’s built for a DIN-rail mount. Multiple Dry Contact Relay – USB devices can work together, controlled by a single controller.

Additional Information

Specification

● Dry contact inputs (beams) – 4
● Outputs (relays) – 4
● USB rev 2.0 full speed (12 MBit/s)
● Power supply through USB computer cable
● Module supply current 200-500 mA depend on load
● Optical insulation between input-output from (1000 Volt for at least one minute)
● Build in optical insulated secondary power supply 24Volt providing max 1Wt
● Dry contacts current 8 mA max
● Build in limiting resistor allows direct connection 24V to any dry contact
These are limitations for Dry Contact Relay 4x4/E currents and voltages:

● For any input current should not exceed 50 mA
● For any relay line voltage between contacts should not exceed 60 V (in any direction, AC included)
● For any relay current should not exceed 400 mA any direction
● To limit the current through dry contact input, external voltage source could be connected through a current limiting resistor

  1. Dry Contact Relay – USBs have been used in all sorts of home and commercial integration projects. Please look at our resources page for how to guides and feel free to reach out to us for help with your automation or integration needs