COMET H0430 Temperature Controller with 2 Relays RS485

COMET H0430 Temperature Controller with 2 Relays and RS485

The COMET H0430 is a professional temperature controller with an integrated high-precision sensor designed for reliable indoor and outdoor use. With a measurement range of –30 to +80 °C and an accuracy of ±0.4 °C, it automatically controls heaters, coolers, fans, or other temperature actuators – either standalone or as part of your building automation system.

Two powerful potential-free relay outputs (2 A / 50 V / 60 VA) directly switch your loads. If the temperature exceeds the set limits, a loud acoustic signal is triggered for immediate on-site alerting – even without a network connection. Three binary inputs detect external states such as open doors/windows, power presence, smoke detection, water ingress, or airflow – ideal for complex safety and control logic.

Thanks to the RS485 interface with Modbus RTU protocol (factory setting), the H0430 can be seamlessly integrated into PLC, SCADA, or BMS systems. Alternatively, the ARION and Advantech ADAM protocols are available. Configuration takes just a few minutes using the free TSensor software or directly via the device’s buttons and display.

The extremely robust housing with IP65 protection (electronics) and IP40 (sensor), combined with an operating temperature range of –30 to +80 °C, makes the H0430 ideal for warehouses, production areas, cold storage rooms, server rooms, greenhouses, or outdoor installations under shelter.

Why the COMET H0430 is your best choice:

• Precision temperature sensor integrated –30 to +80 °C with ±0.4 °C accuracy
• 2 potential-free relays (2 A / 50 V / 60 VA) – direct load switching
• Acoustic alarm via built-in buzzer (switchable)
• 3 binary inputs for door/window contacts, smoke, water, power, etc.
• RS485 Modbus RTU – ready for automation integration
• Free TSensor software for easy setup and calibration
• Rugged IP65 housing – suitable for harsh environments
• Wide power supply 9–30 V DC – flexible application
• Easy wall mounting – only two screws
• 3-year warranty – COMET quality assurance

Technical data:

• Temperature measurement range: –30 to +80 °C
• Accuracy: ±0.4 °C
• Resolution: 0.1 °C
• Relay outputs: 2 pcs, max. 50 V / 2 A / 60 VA
• Binary inputs: 3 pcs (dry contact, open collector, or voltage signal, not galvanically isolated)
• Minimum pulse duration (binary input): ≥ 500 ms
• Voltage on open contact: < 3.3 V
• Communication: RS485
• Protocols: Modbus RTU, ARION, Advantech ADAM
• Acoustic alarm: built-in buzzer, switchable
• Power supply: 9–30 V DC
• Protection rating: IP65 (electronics), IP40 (sensor)
• Operating temperature: –30 to +80 °C
• Temperature compensation of humidity sensor: entire temperature range (even if humidity sensor not present)
• Warranty: 3 years

Typical applications:

• Heating and cooling system monitoring
• Storage and cold rooms
• Server rooms and data centers
• Greenhouses and agriculture
• Production areas and machine supervision
• Control cabinets with temperature alarm
• Technical rooms and basements
• Frost and heat protection monitoring

Mounting & commissioning – quick and simple

The H0430 is mounted to the wall using two screws. The self-clamping terminals and clear labeling make wiring straightforward and quick. Switching points, hysteresis, and alarm delays can be easily configured via the TSensor software or directly on the device.

Summary:

• Ambient temperature transmitter with two relay outputs
• Suitable for indoor and outdoor use
• Integrated temperature sensor
• The temperature transmitter features three binary inputs for two-state signals such as power supply, water, smoke, airflow, or door contact.

Scope of delivery:

• H0430 unit
• User manual
• Traceable calibration certificate
• Free TSensor software for transmitter configuration