User Manual for AJAX models including: Relay, 12V Wireless Dry Contact Power Relay, Relay 12V Wireless Dry Contact Power Relay, Wireless Dry Contact Power Relay, Dry Contact Power Relay, Contact Power Relay, Power Relay, Relay
Relay User Manual
Updated October 4, 2021
Relay is a wireless, low-voltage relay featuring potential-free (dry) contacts. Use Relay to remotely switch on/off appliances powered by a 724 V DC source. Relay can operate both in pulse and bistable mode. The device communicates with a hub via Jeweller radio protocol. In the line of sight, the communication distance is up to 1,000 m.
Regardless of the type of electrical circuit, only a quali ed electrician should install Relay!
The Relay contacts are not galvanically connected to the device itself, so they can be connected to the input control circuits of various equipment to imitate a button, toggle switch, etc.
Relay is compatible only with Ajax hubs and does not support connecting via uartBridge or ocBridge Plus.
Use scenarios to program actions of automation devices (Relay, WallSwitch or Socket) in response to an alarm, Button press or schedule. A scenario can be created remotely in the Ajax app.
How to create and con gure a scenario in the Ajax security system The Ajax security system can be connected to the central monitoring station of a security company.
Buy low-tension relay Relay
Functional Elements
1. Antenna 2. Power supply terminal block 3. Contacts terminal block 4. Function button 5. Light indicator
PS IN terminals -- "+" and "-" contact terminals, 7-24 V DC input power supply. Relay terminals -- output potential-free terminals.
Operating Principle
Do not connect Relay power supply input terminals to a voltage exceeding 36 V or alternate current sources. It creates a risk of re and will damage the device!
Regardless of the type of electrical circuit, only a quali ed electrician should install Relay!
Relay is powered by a 724 V DC source. The recommended voltage values are 12 V, and 24 V. Use the Ajax Security System app to connect and set up Relay.
Relay features dry (potential-free) contacts. The contacts are not connected to the device galvanically so that Relay can imitate a button, switch, etc. in electrical circuits of various voltages (sirens, electrical valves, electromagnetic locks). The miniature body makes it possible to install Relay inside a junction box, switchboard, or a switch.
Relay closes and opens the contacts by user command from the app or automatically by scenario.
Relay operation modes:
Bistable -- Relay opens or closes contact and remains in this state. Pulse -- Relay opens or closes contacts for a pre-set time (from 0.5 to 255 seconds) then switches back to the initial state.
Connecting to the hub
Before connecting the device:
1. Switch on the hub and check its Internet connection (the logo glows white or green).
2. Install the Ajax app. Create the account, add the hub to the app, and create at least one room.
3. Make sure that the hub is not armed, and it does not update by checking its status in the Ajax app.
4. Connect Relay to 12 or 24 V power supply.
Only users with administrator rights can add a device to the app
To pair Relay with a hub:
1. Click Add device in the Ajax app. 2. Name the device, scan it, or enter the QR code manually (located on the case
and packaging), select the room.
3. Click Add -- the countdown will begin. 4. Press the functional button.
For detection and pairing to occur, the device should be located in the coverage area of the hub's wireless network (at the same object). The connection request is transmitted only at the moment of switching on the device.
If the device failed to pair, wait 30 seconds and then retry. Relay will appear in the list of hub devices.
The device statuses update depends on the ping interval set in the hub settings. The default value is 36 seconds.
When switching on for the rst time, Relay contacts are open! When deleting Relay from the system, contacts open!
States
1. Devices 2. Relay
Parameter Jeweller Signal Strength
Value Signal strength between the hub and Relay
Connection Routed Through ReX Active Voltage Temporary Deactivation Firmware Device ID
Settings
1. Devices 2. Relay 3. Settings
First eld Room
Settings
Relay Mode
Contact State Pulse duration, sec
Connection status between the hub and the relay Displays the status of using the ReX range extender State of the relay contacts (closed / open) The current input voltage Displays the status of the device: active or completely disabled by the user Device rmware version Device identi er
Value Device name, can be edited Selecting the virtual room to which the device is assigned Choosing the relay operation mode
Pulse Bistable Normal contact state Normally Closed Normally Open Selecting the pulse duration in the pulse mode: From 0.5 to 255 seconds
Scenarios
Opens the menu for creating and con guring scenarios
Learn more
Jeweller Signal Strength Test User Guide
Temporary Deactivation
Switches the relay to the signal strength test mode
Opens the Relay User Manual
Allows a user to deactivate the device without removing it from the system. The device will not execute system commands and participate in automation scenarios. All noti cations and alarms will be ignored
Please note that deactivated device will save it's current state (active or inactive)
Unpair Device
Disconnect Relay from a hub and delete its settings
Voltage protection -- the contact will open when the voltage exceeds the limits of 6.536.5 V.
Temperature protection -- the contact will be opened when the temperature threshold of 85° inside Relay is reached.
Indication
The Relay light indicator can light green depending on the device status.
When not paired with the hub, the light indicator blinks periodically. When the functional button is pressed, the light indicator lights up.
Functionality Testing
The Ajax security system allows conducting tests for checking the functionality of connected devices. The tests do not start immediately but within a period of 36 seconds when using default settings. The test time start depends on the settings of the detector ping interval (the Jeweller menu in the hub settings). Jeweller Signal Strength Test
Installation of the Device
Regardless of the type of electrical circuit, only a quali ed electrician should install Relay.
The communication range with the hub in the line of sight is up to 1,000 meters. Take this into account when choosing the location for Relay. If the device has a low or unstable signal strength, use the ReX radio signal range extender.
Installation process:
1. De-energize the cable to which Relay will be connected. 2. Connect the grid wire to the Relay terminals according to the following scheme: When installing Relay in the box, lead out the antenna and place it under the plastic frame of the socket. The bigger the distance between the antenna and metal structures, the lower the risk of interfering (and impairment) of the radio signal.
Do not shorten the antenna! Its length is optimal for operation within the used radio frequency range!
During the installation and operation of Relay, follow the general electrical safety rules and the requirements of electrical safety regulatory acts.
It is strictly forbidden to disassemble the device. Do not use the device with damaged power cables.
Do not install the relay:
1. Outdoors. 2. In metal wiring boxes and electrical panels. 3. In places with temperature and humidity exceeding the permissible limits. 4. Closer than 1 m to a hub.
Maintenance
The device does not require maintenance.
Tech Specs
Actuating element The service life of the relay Supply voltage range Voltage protection Maximum load current* Operating modes Pulse duration Maximum current protection Parameter control Device energy consumption
Frequency band
Electromagnetic relay 200,000 switchings 7 24 V (DC only) Yes, min -- 6.5 V, max -- 36.5 V 5 A at 36 V DC, 13 A at 230 V AC Pulse and bistable 0.5 to 255 seconds No Yes (voltage) Less than 1 W 868.0 868.6 MHz or 868.7 869.2 MHz depending on the region of sale
Compatibility
Effective radiated power Modulation of the radio signal
Maximum distance between the device and the Hub
Operates only with all Ajax hubs, and range extenders
3.99 mW (6.01 dBm), limit -- 25 mW GFSK Up to 1000 m (any obstacles absent)
Learn more
Communication ping with the receiver Shell protection rating Operating temperature range
Max. temperature protection
Operating humidity Dimensions Weight Service life
12 300 sec (36 sec default) IP20 From 0° to +64° (ambient) Yes, over 65°C at the place of installation or over 85°C inside the Relay Up to 75% 39 × 33 × 18 mm 25 g 10 years
If using inductive or capacitive load, the maximum commutated current decreases to 3 A at 24 V DC and to 8 A at 230 V AC!
Compliance with standards
Complete Set
1. Relay 2. Connecting wires -- 2 pcs 3. Quick Start Guide
Warranty
Warranty for the "AJAX SYSTEMS MANUFACTURING" LIMITED LIABILITY COMPANY products is valid for 2 years after the purchase. If the device does not work correctly, you should rst contact the support service -- in half of the cases, technical issues can be solved remotely!
The full text of the warranty
User Agreement
Technical support: support@ajax.systems
mailto:support@ajax.systems