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  • AJAX | WallSwitch Jeweller Wireless Power Relay with Energy Monitoring, Black | 42855
WallSwitch Jeweller Wireless Power Relay with Energy Monitoring, Black
AJAX

AJAX | WallSwitch Jeweller Wireless Power Relay with Energy Monitoring, Black | 42855

SKU AJ-42855

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A mains power relay that switches up to 3.0 kW and reports what the load is drawing. Unlike the dry contact Relay, this one carries the mains itself, so it drops into an existing lighting or appliance circuit.

Built for the installer

The energy consumption monitor is what differentiates it. It reports current, voltage and power on the controlled circuit, which turns a switch into a diagnostic: a customer can see that a heater is running when it should not be, and a failing load shows up as a changing draw before it fails completely.

Protection is comprehensive. Overcurrent protection trips above 11 A when enabled, voltage protection cuts out outside 184-253 V on 230 V mains or 92-132 V on 110 V mains, and temperature protection trips over 149F. Class II electric shock protection.

Key features

  • Switches up to 13 A, 3.0 kW at 230 V or 1.5 kW at 110 V
  • Energy consumption monitoring reporting current, voltage and power on the circuit
  • Overcurrent, voltage and temperature protection that cuts the load automatically
  • Class II electric shock protection
  • Controlled from the Ajax app or by automation scenario

System requirements

Requires an Ajax hub or range extender. Wired into a 110-230 V circuit. Installation is mains electrical work and must comply with local regulations.

Specifications

SKUAJ-42855
BrandAJAX
Radio communication rangeUp to 3,250 ft in open space, between the device and a hub or range extender
Power input110-230 V AC +/- 10%, 50/60 Hz
Maximum continuous load current13 A
Output powerUp to 3.0 kW resistive at 230 V, up to 1.5 kW resistive at 110 V
Average consumptionUp to 1 W
Current protectionTrips above 11 A with overcurrent protection enabled, above 13 A disabled
Voltage protection 230 VCuts out below 184 V or above 253 V
Voltage protection 110 VCuts out below 92 V or above 132 V
Temperature protectionCuts out over 149F
Electric shock protection classClass II
Energy monitoringReports current, voltage and power consumption
ColourBlack
Region9NA, North America model
Radio protocolJeweller, two-way encrypted wireless
Frequency band (North America)905.0-926.5 MHz, certified to UL/ULC standards
Radio modulationGFSK with frequency hopping
EncryptionBlock encryption with a dynamic key
Communication loss detectionAfter 36 seconds
Anti-spoofingDevice authentication
Warranty24 months

Documents and resources

FAQs

What is the difference between WallSwitch and Relay?
WallSwitch carries the mains itself and drops into an existing circuit, with energy monitoring. Relay provides a dry contact independent of the load, for driving third-party equipment that has its own supply.
What does energy monitoring give the customer?
Current, voltage and power readings on the controlled circuit. That shows a load running when it should not be, and a changing draw often indicates a failing appliance before it fails completely.
What load can it switch?
Up to 13 A continuous, which is 3.0 kW resistive at 230 V or 1.5 kW at 110 V. Overcurrent protection trips above 11 A when enabled.
Does installation require an electrician?
It is wired into a mains circuit, so the work must comply with local electrical regulations and in many jurisdictions requires a qualified electrician.
Does this device need an Ajax hub?
Yes. All Jeweller devices report to an Ajax hub or a range extender. The device cannot operate standalone and does not connect to a third-party panel directly.
What does the 9NA region code mean?
It is the North America model, operating on the 905.0-926.5 MHz Jeweller band certified to UL/ULC standards. European models on 868 MHz are not interchangeable with it.
How quickly is a lost device detected?
Within 36 seconds. Jeweller polls each device continuously, so a jammed, removed or failed device is reported rather than quietly going offline.
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