Product Introduction

Model Interpretation

Technical Parameters

• Supply voltage: 24 V AC/DC (±10 %)

• Measuring range: −20 °C to +120 °C

• Accuracy: ±2 °C; resolution: 0.1 °C

• Sensor types: PT100, KTY83/84, NTC

• Output: 1×NO relay contact, 250 V AC / 6 A max

• Delay time: 0–30 s adjustable

• Operating temperature: −20 °C to +60 °C; humidity 5–95 % RH, non-condensing

• Protection class: IP65 front, IP20 rear

• Dimensions: 75 × 30 × 25 mm; weight: approx. 0.2 kg

• Approvals: CE, UL, CSA

Interface and Communication Configuration

• Sensor input terminals (X1): for PT100, KTY, or NTC connection

• Power terminals (A1/A2): 24 V AC/DC

• Relay output (1NO): potential-free contact for alarm or shutdown

• No built-in communication; for remote monitoring, use with external Modbus RTU/TCP modules

• LED indicators: power ON, alarm, and fault status

Core Functions

• Real-time temperature monitoring with high accuracy and resolution

• Over-temperature and under-temperature alarm with adjustable thresholds

• Selectable sensor types for flexible application

• Adjustable delay time to avoid false alarms

• Potential-free relay output for direct control of alarms, contactors, or valves

• LED status indication for easy on-site diagnosis

• Compact DIN-rail mounting for simple integration in control cabinets

Application Scenarios

• Motor and generator winding temperature protection

• Transformer, inverter, and power cabinet temperature monitoring

• HVAC and building automation for duct/room temperature control

• Food & beverage, pharmaceutical, and chemical process temperature supervision

• Water treatment and pumping station equipment protection

• Industrial machinery, packaging, and material handling equipment thermal monitoring

Operation and Maintenance Instructions

• Mount vertically on standard DIN rail; ensure adequate ventilation

• Wire sensors according to terminal diagram; avoid long parallel runs with power cables to reduce noise

• Apply 24 V AC/DC power and check that the power LED is ON

• Set temperature threshold and delay time via front potentiometers or DIP switches

• Test alarm function by simulating over-temperature; verify relay actuation and LED indication

• Periodically check wiring tightness and sensor condition; clean the front panel with a dry cloth only

• Do not expose to corrosive gases, liquids, or direct moisture; keep ambient temperature within −20 °C to +60 °C

• Replace the unit if LED indicates permanent fault or measurement drift exceeds tolerance