The ATO DIN rail smart temperature controller provides stable industrial temperature measurement and control with PID regulation for fast response. It supports universal input, multiple output modes, alarm functions, and strong anti-interference performance. Designed for easy DIN rail installation and reliable operation in harsh environments, it is widely used in automation heating and cooling control systems.
Specification
| Model |
ATO-OHR-DN30 |
| Input Signal* |
Voltage: 0–20mV, 0–40mV, 0–100mV, 0–5V, 1–5V, 0–10V; Current: 0–20mA, 0–10mA, 4–20mA RTD: Cu50(-50.0–150.0℃), Cu53(-50.0–150.0℃), Cu100(-50.0–150.0℃), Pt100(-200.0–650.0℃), BA1(-200.0–600.0℃), BA2(-200.0–600.0℃) Thermocouple: B(400–1800℃), S(0–1600℃), K(0–1300℃), E(0–1000℃), T(-200.0–400.0℃), J(0–1200℃), R(0–1600℃), N(0–1300℃), Tre3-25(0–2300℃), Tre5-26(0–2300℃) |
| Control Output* |
Analog: 4–20mA / 1–5V / 0–10mA / 0–5V / 0–20mA / 0–10V Relay (JZC/K1): AC125V/2A, DC24V/2A SCR (K3): Single-phase thyristor zero-cross pulse output SSR (K4): DC12V/30mA drive |
| Accuracy |
±0.3%FS |
| Display Range |
-1999–9999 |
| Alarm Output* |
Upper/lower limit alarm with hysteresis Contact rating: AC220V/2A (resistive load) Do not exceed relay contact capacity |
| Power Supply Output |
DC24V ±1V, load ≤30mA |
| Communication Output |
RS485, two-wire, distance ≤1000m |
| MODBUS RTU: 1 start bit, 8 data bits, 1 stop bit, no parity, baud rate 1200~9600bps |
| Power Supply |
AC 100–240V, Frequency: 50/60Hz, Power Consumption: ≤5W DC 12–36V, Power Consumption: ≤3W |
| Mounting |
35mm DIN rail; Wall-mounted |
| Operating Environment |
Temperature: -10°C–50°C (no condensation or icing) |
| Relative Humidity |
≤85% RH, avoid corrosive gases |
| Weight |
300g |
Feature
- AI-Based PID Control: Fast, stable temperature regulation with no overshoot or undershoot, no manual parameter tuning required.
- Universal Input Compatibility: DIN rail intelligent temperature controller supports voltage, current, RTD, and thermocouple signals for versatile industrial applications.
- Multiple Output Options: Analog, relay, SSR, and SCR outputs to suit different control requirements.
- High Accuracy & Reliability: Industrial PID temperature controller delivers ±0.3%FS measurement accuracy with strong anti-interference performance for reliable operation in harsh industrial environments.
- Dual LED Display: High-brightness four-digit display with PC cover for clear, durable readings.
- Alarm Functions: Digital PID temperature controller provides upper and lower limit alarms with hysteresis for improved safety and process control.
- Plug-and-Play Installation: 35mm DIN rail mounting with easy plug-in terminals for quick setup or replacement.
- Durable & Ventilated Design: ATO DIN Rail PID Temperature Controller uses side ventilation openings to improve heat dissipation and maintain stable performance in high-temperature environments.
- RS485 Modbus Communication: Long-distance digital communication for integration with industrial control systems.
- Flexible Power Supply: Supports AC 100–240V or DC 12–36V for various industrial environments.
Size (unit: mm)

Application
The DIN rail temperature controller supports various industrial sensors, including temperature sensors, pressure transmitters, magnetic level gauges, level transmitters, and load cells, providing flexible and reliable process monitoring and control across industrial applications.

Tips: Why does this temperature controller use adaptive control technology instead of conventional PID?
This temperature controller adopts adaptive control technology because conventional PID control requires manual parameter tuning and often leads to temperature fluctuations, overshoot, and longer stabilization time when process conditions change. Adaptive control automatically adjusts control parameters in real time according to system variations, ensuring higher stability, faster response, and more precise temperature control. As a result, it achieves up to ±0.1°C accuracy, reduces temperature fluctuations, and improves overall process reliability without manual intervention.