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WS4 Relay Boards

You can add easily 12 or 24 relay outputs to your webserver installation with our WS4 relay boards.

The electronic will be protected by a resistant aluminium housing.


Features Specifications Support Related products

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RS-485 Connection

The WS4-RB is an extension module compatible with RS-485 and IP protocols for local bus communications.


Connection: RS-485 connection via local bus
Ouputs: 12 - Relays 2 contacts NO 2 A - 48 V
Tamper: 1 tamper input
Consumption: 13.8 V DC min. 20 mA - 250 mA standard - max. 300 mA
Visible signal: LEDs to indicate the output status
Terminals: Disconnectable
WS4-RB-E: 12 relay board, only electronic
WS4-PS5: Universal aluminium wall-mounted housing with 1 x 5A PSU for door controller - Webserver
* All product specifications are subject to change without notice.


  • Download WS4-RB Manual - DE, EN, ES, FR, IT, NL