AJAX Relay Wireless Dry Contact Switch

Quick guide from the manual

The AJAX Relay is a wireless, low-voltage relay with potential-free (dry) contacts, designed to remotely switch appliances on or off. It operates on a 7–24 V DC power supply and communicates with an Ajax hub via the Jeweller radio protocol. Important: Installation must be performed by a qualified electrician. The device is intended for indoor use and should not be installed in metal wiring boxes or panels to ensure proper radio signal transmission.

Functional Elements

The device consists of the following key components:

• Antenna: Used for radio communication. Should be placed outside of metal structures.
• Power supply terminal block: For connecting the 7-24 V DC power source.
• Contacts terminal block: Output terminals for the connected equipment.
• Function button: Used for pairing and testing.
• Light indicator: Displays device status.

Installation

Before installing, ensure the power cable is de-energized. Connect the grid wire to the Relay terminals according to the wiring scheme. When installing in a junction box, lead the antenna out and place it under the plastic frame of the socket to maximize signal strength. Do not shorten the antenna.

Do not install the relay:

• Outdoors.
• In metal wiring boxes or electrical panels.
• In places with temperature and humidity exceeding permissible limits.
• Closer than 1 meter to a hub.

Operation Modes

The Relay supports two operation modes, configurable via the Ajax app:

• Bistable: The relay opens or closes the contact and remains in that state until the next command.
• Pulse: The relay opens or closes the contacts for a pre-set time (from 0.5 to 255 seconds) and then switches back to the initial state.

Settings

Through the Ajax app, you can configure:

• Relay Mode: Choose between Pulse or Bistable.
• Contact State: Set to Normally Closed or Normally Open.
• Pulse Duration: Set the time for pulse mode (0.5 to 255 seconds).
• Scenarios: Program actions in response to alarms, button presses, or schedules.

Technical Specifications

• Supply Voltage: 7–24 V DC.
• Maximum Load Current: 5 A at 36 V DC, 13 A at 230 V AC.
• Protection: Voltage protection (6.5–36.5 V) and temperature protection (85°C inside).
• Communication Range: Up to 1000 m in line of sight.
• Operating Temperature: 0°C to +64°C.
• Dimensions: 39 × 33 × 18 mm.

Maintenance

The device does not require maintenance. If technical issues arise, contact support at [email protected].