Ajax Temperature Alert Kit with Wireless Transmitter & Waterproof Probe

Ajax Temperature Alert Kit (AJAXTMP1)

The Ajax Temperature Alert Kit turns high or low temperature events into a genuine Ajax security notification. Built around the official Ajax Transmitter integration module, the kit pairs a rugged NTC waterproof temperature probe and relay with the Jeweller wireless protocol so that any Ajax Hub can monitor and report on temperature swings in cool rooms, server racks, garages, greenhouses, boats, or plant and equipment rooms. Because the sensor communicates over the same encrypted radio network as the rest of the Ajax range, temperature alarms appear in the Ajax app alongside intrusion, fire, and leak events, giving installers a single pane of glass for the whole site.

Key Features

• Ajax Transmitter core module relays alarm and tamper signals to an Ajax Hub or Hub Plus over the long-range Jeweller radio protocol.
• Wide-range NTC temperature probe rated from roughly -50°C to 110°C with high measurement accuracy for precise threshold detection.
• IP67-rated clear housing protects the electronics in damp, dusty, or outdoor-adjacent installations.
• Low-temperature rated CR123A batteries included, suitable for operation down to extreme cold environments such as freezers and cool rooms.
• Built-in accelerometer in the Transmitter module detects tampering or removal attempts and raises a fault event.
• Two-way encrypted communication using AES encryption keeps temperature data and alarm signals secure in transit.
• 12V power supply included for continuous operation of the thermal relay and sensor assembly.
• Long wireless range, supporting communication with the hub over large sites and multi-storey buildings when line of sight allows.

Typical Applications

This kit suits any site where an unexpected temperature change could mean lost stock, equipment damage, or a safety risk. Common installations include cold storage and refrigeration units, wine cellars, server and comms rooms, boat engine bays, livestock sheds, and industrial plant rooms. Once configured on an Ajax Hub, the system can trigger high- or low-temperature alarms, send push notifications, and integrate the event into wider automation scenarios such as switching on backup cooling or heating.

What's in the Box

• 1 x Ajax Transmitter module
• 1 x Thermal relay with 10A switching capacity (12V)
• 1 x Waterproof NTC temperature probe
• 3 x CR123A low-temperature rated batteries
• 1 x 12V power supply
• 1 x IP67 clear cover housing

Frequently Asked Questions

Does this kit include an Ajax Hub?
No. The Temperature Alert Kit is an accessory module and must be paired with an Ajax Hub, Hub Plus, or compatible control panel, which is sold separately.

What temperature range can it detect?
The included probe and relay assembly is designed to monitor across an extended range, covering everything from deep-freeze cold rooms through to hot plant equipment, with alarm thresholds configured in the Ajax app.

How is the alarm delivered?
The Transmitter module sends the high or low temperature event wirelessly to the Ajax Hub using the encrypted Jeweller protocol, and the hub then notifies users and, if configured, a monitoring station.