The SK-B241-PQ is the slim mullion version of the SECO-LARM Bluetooth keypad/proximity controller family. It is commonly used beside narrow door frames, pedestrian gate posts, storefront frames, and controlled entries where a standard single-gang keypad is too wide. The keypad, prox reader, Bluetooth management, request-to-exit input, door sensor input, tamper output, and relay output are built into one device, so it can serve as the local controller for many simple access points. The most important compatibility checks are power, lock or gate input style, EM 125 kHz credential use, and whether the job requires a standalone Bluetooth controller instead of a reader tied to a separate access-control panel.
| Manufacturer | SECO-LARM |
|---|---|
| Product Type | Bluetooth mullion keypad with prox |
| Part Number | SK-B241-PQ |
| Application | Outdoor or protected access-control keypad installations |
| Operating Voltage | 9-25 VDC |
| Output | Form C relay, 2.0A at 30 VDC |
| Proximity Technology | EM 125 kHz |
| IP Rating | IP65 weather-resistant |
| Enclosure Material | Zinc alloy |
| Dimensions | 1-3/4 in x 6 in x 7/8 in |
| Programming | SL Access app over Bluetooth |
This is a standalone Bluetooth access controller, not just a passive reader. If the site already has a multi-door access-control panel, verify whether a standalone relay controller or a Wiegand-style reader is actually required.
For gate and door access installations, keep all required egress devices, fire/life-safety devices, and gate entrapment protection in place. A keypad should never be wired to defeat required safety functions.
Choose SK-B241-PQ when a narrow mullion-style housing is needed. SK-B141-PQ uses a wider single-gang style housing.
Yes. It is listed as an IP65 weather-resistant model, but it still needs proper mounting, cable entry protection, and low-voltage wiring practices.
It uses EM 125 kHz proximity credentials, so card and fob type must match that technology.
It can trigger a compatible low-voltage gate access input through its relay when installed correctly.
No. It is managed locally over Bluetooth through the SL Access app rather than through a cloud connection.