Keyence SL-R12EX Unit Safety Relay | 24V DC | Muting

Description

The Keyence SL-R12EX is an Intelligent Extension Application Unit in the SL-C Series safety light curtain family. It is designed for use with the SL-R11 Intelligent Safety Relay Unit and SL-U2 dedicated power supply unit, and expands the safety functionality of SL-C Series Type 4 safety light curtains. Refer to manufacturer documentation to confirm compatibility with your specific application.

The SL-R12EX draws its power directly from the SL-R11 or SL-U2 — it has no independent power supply input. Muting inputs are rated at 24 VDC / 2.3 mA with a maximum input voltage of 26.4 VDC and an ON-threshold of 19 V; bank selection inputs are rated at 24 VDC / 1.6 mA. The unit adds advanced application functions to the connected SL-C system including floating blanking (up to three beam axes), fixed blanking, blanking blind protection, and muting. The housing is constructed from polycarbonate and the unit weighs approximately 300 g.

The SL-R12EX must be installed inside a control panel or enclosure rated at minimum IP54 per IEC 60529. It is a dedicated add-on for the SL-C Series and must not be operated independently from that system.

Technical Specifications

• Brand: Keyence
• MPN: SL-R12EX
• Type: Safety Relay / Intelligent Extension Application Unit
• Series: SL-C
• Function: Muting, Floating Blanking (1–3 axes), Fixed Blanking, Blanking Blind Protection
• Power Supply: Supplied by SL-R11 or SL-U2 (not independently powered)
• Muting Input Voltage: 24 VDC / 2.3 mA (max 26.4 VDC)
• Muting Input ON-Threshold Voltage: 19 V
• Muting Input OFF-Threshold Current: 0.5 mA
• Muting Input Common: A common for A1 and A2; B common for B1 and B2
• Bank Selection Input Voltage: 24 VDC / 1.6 mA (max 26.4 VDC)
• Bank Selection Input ON-Threshold Voltage: 19 V
• Housing Material: Polycarbonate
• Weight: Approx. 300 g
• Enclosure Requirement: IP54 or higher (IEC 60529) — must be installed inside control panel
• Compatible Parent Units: SL-R11, SL-U2
• Compatible Light Curtain: SL-C Series (Type 4)
• Country of Manufacture: Japan

Condition: Used. This part was removed from a working production environment.

Shipping & Handling

• Domestic shipping via USPS Ground Advantage, USPS Priority Mail, or UPS Next Day Air. Cost is calculated at checkout based on your location. We ship within 1 business day.
• International shipping is offered through the International Shipping program.
• Local pickup is available — message us ahead of time to coordinate.
• UPS Next Day Air orders: Cutoff is 2pm Eastern for guaranteed same-day shipout. We can usually work later orders in if we know they\'re coming, so message us — we just can\'t work magic every time.
• Shipping on your own UPS or FedEx account? No problem. This package ships at approximately 6.00 × 6.00 × 4.00 inches and 2.00 lb 0.00 oz. Send a message before checkout with your account number and shipping method.

Returns

We offer free returns through \'s standard 30-day return policy. If something isn\'t right, message us first — we want to make it right and we\'ll work with you to do it.

About ACME MRO Solutions

We started ACME MRO Solutions to fix something we kept running into as contractors — plants down, parts slow, surplus listings you couldn\'t trust. Our goal is simple: get YOU the right component fast, with an honest description, so you can get back to running.

We describe what we see. Used items show signs of use; if a part has visible wear, damage, or a missing component, the condition description will say so. We don\'t claim anything is tested unless we tested it — and we don\'t bench-test parts where testing isn\'t practical or revealing (feed-through modules, breakers, mechanical components). When we do test something, we\'ll say so explicitly.

If something is our fault, we don\'t work through it — we make it right. We are proud to serve American manufacturing. Your uptime is our bottom line.

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Questions? Talk to us.

Send a message through . During business hours we typically respond within the hour. Whether you need to confirm compatibility before buying, request additional photos, ask about a cross reference, or work through something after delivery — message first and we\'ll figure it out together.

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