Dry contact relay to control 12-24 V⎓ power supply remotely
Ajax Relay Jeweller Low-Current Dry Contact Relay – 1938204-19-NC1
The Ajax Relay Jeweller 1938204-19-NC1 is a wireless low-current dry contact relay designed for remote control and automation of electrical devices within an Ajax security system. Compact and versatile, it allows users to control equipment such as electric locks, gates, garage doors, roller shutters, lighting circuits, modems, routers, and other compatible low-current devices.
Relay Jeweller operates from a 7–24V DC power supply and features a potential-free dry contact, which is galvanically isolated from the device power circuit. This allows it to safely switch a wide range of connected equipment while being managed directly through the Ajax app, automation scenarios, or alarm events.
Using Ajax Jeweller two-way encrypted radio communication, the relay communicates securely with compatible Ajax hubs over a wireless range of up to 1,000 metres in open space. It supports both bistable mode for continuous on/off switching and pulse mode with adjustable pulse duration, making it suitable for access control, automation, and security-related switching applications.
Key Features
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Wireless low-current dry contact relay
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Model / SKU: 1938204-19-NC1
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Designed for Ajax automation and control applications
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Controls electric locks, gates, roller shutters, lights, modems, routers, and compatible electrical devices
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Potential-free dry contact output
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Galvanically isolated contact from the relay power circuit
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Operating voltage: 7–24V DC
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Supports bistable and pulse operating modes
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Adjustable pulse duration from 0.5 to 255 seconds
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Jeweller two-way encrypted radio communication
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Wireless communication range up to 1,000m in open space
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Remote control via Ajax mobile app
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Supports automation scenarios and alarm-based actions
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Overvoltage and overheating protection
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Compact design for discreet installation
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Suitable for indoor installation
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Compatible with Ajax hubs and radio signal range extenders
Ideal For
Perfect for alarm installers, access control systems, smart automation projects, homes, offices, shops, warehouses, and commercial sites where reliable wireless switching, remote control, and Ajax system integration are required.
