Ajax Relay (Jeweller) – Wireless Low-Voltage Dry Contact Power Relay (7–24 VDC)

Product Overview

The Ajax Relay 27401.19.NC3 is a wireless low-voltage power relay featuring potential-free (dry) contacts designed for remote control of low-voltage electrical circuits and automation systems. Operating within a power supply range of 7 to  24 VDC, it features an electrically isolated potential-free relay contact capable of handling loads up to 5 A at 24 VDC / 36 VDC or 13 A at 110-230  VAC.

Engineered to integrate seamlessly into motorized gates, automated roller shutters, access barriers, electronic door locks, water valves, and rebooting network equipment, it communicates via the proprietary Jeweller wireless radio protocol across distances up to $1,000\text{ meters}$ in open space. With bistable and pulse operation modes, customizable pulse durations (0.5 to  255 seconds), and built-in surge and overheat protection, it turns low-voltage equipment into smart, automated systems.

Key System Features & Functionality

• Potential-Free Dry Contact Switching: Electrically isolated contact terminals allow switching of external DC and AC circuits without passing the device supply voltage into the load circuit.

• Low-Voltage Supply Range: Powers reliably from 7 to  24 VDC power sources (ideal for 12 VDC and 24 VDC security panels, gates, and access power supplies).

• Bistable & Pulse Operation Modes: Configurable as a continuous on/off switch (bistable) or a momentary pulse contact (0.5-255 seconds) for activating gate openers, intercom strikes, and barrier arms.

• Flexible Automation Scenarios: Trigger actions automatically based on security system arming/disarming, alarm detector triggers, scheduled timers, or app commands.

• Jeweller Wireless Technology: Two-way encrypted radio communication spanning up to 1,000 meters (3,300 ft) open-space range with jamming detection and frequency hopping.

• Compact In-Enclosure Footprint: Miniature form factor fits neatly inside junction boxes, access control power enclosures, and gate control boards.