Ask about Ajax WallSwitch
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The Ajax WallSwitch is a wireless, remote control power relay with an energy monitor used for controlling 220v appliances such as lights, aircons, borehole and pool pumps etc not exceeding 3kW.
The relay power supply is not galvanically isolated with terminal blocks; therefore, the Ajax WallSwitch switches only the power received at the power supply terminal blocks. The device has an energy consumption meter and features three types of protection: voltage, current, and temperature.
The WallSwitch can be controlled manually via the Ajax app, Button press or by Scenario.
Product Code: 7649.13.BL1
Please note: Ajax Hub required for operation.
Compatible with all Alax Hubs and Range Extenders.
Ajax WallSwitch functional elements

- Antenna.
- Terminal blocks.
- Function button.
- LED indicator

IN terminals:
L terminal — power supply phase connection terminal.
N terminal — power supply neutral connection terminal.
OUT terminals:
N terminal — power supply neutral output terminal.
L terminal — power supply phase output terminal.
Ajax WallSwitch operating principle
The Ajax WallSwitch is a power relay of the Ajax system. The relay is installed in the electrical circuit gap to control the power supply of devices connected to this circuit. The relay can be controlled via the function button on the device (by holding it down for 2 seconds), the Ajax app, Button, and automation scenarios.
The Ajax WallSwitch switches one single pole of the electrical circuit — the phase. In this case, the neutral is not commuted and remains closed.
The Ajax WallSwitch measures the current, voltage, the amount of energy consumed by electrical appliances, and the power they consume. This data, along with other operating parameters of the relay, is available in the device States.
Scenario types with Ajax WallSwitch and examples of usage:
By alarm. Lighting is switched on when an opening detector raises the alarm.
By security mode change. The electric lock is automatically blocked when the object is armed.
By schedule. The irrigation system in the yard is switched on according to the schedule for the specified time. Lighting and TV are switched on when the owners are away so the house doesn’t seem empty.
By pressing Button. Switching on night lighting by pressing the smart button.
By temperature. The heating is turned on when the temperature in the room is lower than 20°C.
By humidity. The humidifier is switched on when the humidity level drops below 40%.
By CO₂ concentration. Supply ventilation is turned on when the carbon dioxide concentration level exceeds 1000 ppm.
Control via the app

In Ajax apps, a user can switch on and off electrical appliances connected to an electrical circuit controlled by WallSwitch.
Click the toggle in the Ajax WallSwitch field in the Devices menu: the state of the relay contacts will change to the opposite, and the connected electrical device will switch off or on. This way, a security system user can remotely control the power supply, for example, for a heater or a humidifier.
Energy consumption monitoring
In the Ajax app, the following energy consumption parameters are available for appliances connected via WallSwitch:
- Voltage.
- Load current.
- Power consumption.
- Power consumed.
Update frequency of parameters depends on Jeweller or Jeweller/Fibra polling period (default value is 36 seconds). Power consumption values are not reset in the app. To reset the readings, temporarily power off WallSwitch.
SPECIFICATIONS OF THE AJAX WALLSWITCH:
| Compatibility | Operates with all Ajax hubs, range extenders |
| Classification | Radio channel relay unit |
| Device type | Remote-controlled |
| Installation method | Into wall plate, din rail holder and enclosure |
| Actuating element | Relay |
| Voltage protection | For 230V~ mains: maximum — 253V, minimum — 184V |
| Relay service life | 200,000 switch-ons |
| Maximum load current | 13A |
| Maximum current protection | Yes (13A) |
| Maximum temperature protection | >65°C |
| Permissible power | Resistive load at 230 V — up to 3 Kw |
| Electric power meter function | Available |
| Energy consumption parameter check | Current, voltage, power consumption |
| Alarm signal delivery time | 0.15s |
| Power supply | 110−230 V±10% 50/60 Hz |
| Operation modes | Impulse and Bistable |
| Contact state | Normally open and Normally closed |
| Adjustable pulse duration | 1–255 sec |
| Communication range with central unit | Up to 1,000m in an open space |
| Operating temperature range | From 0°С to +64°С |
| Permissible humidity | Up to 75% |
| Anti-sabotage | Protection against fraud, Jamming detection |
| Protection class of body | IP20 |
| Remote setting and testing | Yes |
| Product dimensions | 39mm x 33mm x 18mm |
| Product weight | 30g |
| Packaging dimensions | 56mm x 47mm x 25mm |
| Mass of unit packed | 145g |
| Warranty | 24 Months limited Manufacturer’s warranty |
WHAT’S IN THE BOX:
1 x Ajax WallSwitch
| SKU | SW423B |
|---|---|
| Warranty | 24-month limited manufacturer warranty |
| Compatibility | Operates with all Ajax hubs, range extenders |
| Device type | Remote-controlled |
| Installation method | Into wall plate, din rail holder and enclosure |
| Actuating element | Relay |
| Voltage protection | For 230V~ mains: maximum — 253V, minimum — 184V |
| Relay service life | 200,000 switch-ons |
| Maximum load current | 13A |
| Maximum current protection | Yes (13A) |
| Maximum temperature protection | >65°C |
| Permissible power | Resistive load at 230 V — up to 3 Kw |
| Electric power meter function | Available |
| Energy consumption parameter check | Current, voltage, power consumption |
| Alarm signal delivery time | 0.15s |
| Power supply | 110−230 V±10% 50/60 Hz |
| Operation modes | Impulse and Bistable |
| Contact state | Normally open and Normally closed |
| Adjustable pulse duration | 1–255 sec |
| Communication range with central unit | Up to 1,000m in an open space |
| Operating temperature range | From 0°С to +64°С |
| Permissible humidity | Up to 75% |
| Anti-sabotage | Protection against fraud, Jamming detection |
| Protection class of body | IP20 |
| Remote setting and testing | Yes |
| Product dimensions | 39mm x 33mm x 18mm |
| Product weight | 30g |
| Packaging dimensions | 56mm x 47mm x 25mm |
| Mass of unit packed | 145g |
Specifications verified against manufacturer documentation. Confirm critical requirements with our team before purchase.
Delivery
- Free delivery on orders of R1,000 or more, nationwide. Orders under R1,000: R99 standard delivery.
- Oversize items (gate motor kits, gate rack, garage door motors): an additional R250 per order, also on free-delivery orders.
- Electric fence poles always carry an additional delivery charge. We confirm the amount with you before dispatch.
- Usually delivered in 3–4 working days after payment, often faster. We email you a tracking number when your order ships.
- Click & Collect is free from our Linbro Business Park store, Sandton. Usually ready within 24 hours on business days, subject to stock availability.
Returns & Warranty
- Changed your mind: return within 7 days, unused, not installed and in the original packaging. We refund the item price less a 15% handling and restocking fee. The original delivery fee is not refunded. *T&C’s apply
- Wrong, missing or damaged on arrival: note it on the courier’s delivery note before you sign and tell us within 7 days. We collect the item, and you choose the correct item, a replacement or a full refund.
- Faulty: every product has a 6-month warranty. We test the item and, if we confirm a fault, you choose a repair, a replacement or a refund.
- Please note: all returned products require technical testing before a refund, replacement or repair is offered.
- The warranty does not cover damage from incorrect installation, modification or misuse. We tell you the outcome in writing.
- Email support@iotrend.co.za with your order number, or log a support ticket through our contact form, before you send anything back.
- Batteries: defects are covered. Damage from deep discharge or incorrect charging is not.
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