
XPR
WS4-RB relay board, 12 relay outputs, RS-485 bus
SCAP part number: WS4-RB
12-relay expansion board for a WS4 web installation, in an aluminium housing.
Interfaces / protocolsRS485
Power supply13.8 V DC, 20 mA min., 250 mA typical, 300 mA max.
HT
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Key features
- Adds 12 relay outputs to a WS4 installation
- Connects to the local RS-485 bus
Technical specifications
| Connection | RS-485 on local bus |
|---|---|
| Outputs | 12 relays, 2 NO contacts, 2 A / 48 V |
| Tamper protection | 1 tamper input |
| Power supply | 13.8 V DC, 20 mA min., 250 mA typical, 300 mA max. |
| Signalling | Output status LEDs |
| Terminal blocks | Plug-in |
| Interfaces / protocols | RS485 |
Applications
- Control of many relays from a WS4 controller
Commercial information
| SCAP part number | WS4-RB |
|---|---|
| Brand | XPR – XPR access control |
| Family | XPR brand: access control |
| Description | WS4-RB relay board, 12 relay outputs, RS-485 bus |
| Price | In € excl. VAT, carriage not included. Your prices are shown after signing in to your trade account. |
| Delivery | Constant stock; next-day or two-day delivery depending on availability. Lead times are given for guidance only. |
| Free carriage threshold | For any order delivered in a single shipment with a minimum value of €1,000 excl. VAT (excluding carriage). Mainland France. |
| Minimum order | €100 excl. VAT. Below that: payment in advance or a €15 excl. VAT handling charge. |
| Payment | First order paid in advance when the account is opened, then 30 days end of month once credit insurance is approved. |
| Warranty | 12 months from the invoice date (return for replacement or repair of the faulty part). |
| Complaints | Visible defects: reservations within 2 clear days of receipt. Quantities and quality: 8 clear days. |
| Returns | Only with prior written agreement, within one month of delivery; credit note issued on the basis of 90% of the invoiced amount. |
Details in our terms of sale. Specifications are indicative and may change without notice.
Documents and sources
- Product page on the XPR website
- Data source: XPR Group manufacturer website (xpr-solutions.com), product pages



