![[OMRON] — EJ1 Modular Temperature Controller (Multi-Point, Basic Unit + End Unit, 24VDC, TC/RTD/Analog Input)](https://img.prosourcemro.com/2026/05/001-611-1024x1024.png)
Temperature Controller
Omron
[OMRON] — EJ1 Modular Temperature Controller (Multi-Point, Basic Unit + End Unit, 24VDC, TC/RTD/Analog Input)
Family ID: OMRON-EJ1
Implement a Multi-Point Control System Easily with Space Saving and Wire Saving by Connecting Modules. Basic Unit (temperature control) requires End Unit for operation. 2 or 4 control points. Voltage, Current, or Transistor outputs. Thermocouple, Platinum resistance thermometer, Analog voltage, and Analog current inputs (selectable per channel). RS-485 communications. M3 terminal and Screwless clamp variants.
9 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| EJ1N-TC2A-QNHB | Basic Unit, 2-point, Voltage output ×2 (SSR) + Transistor ×2, 2 HB alarms, 2 event inputs, M3 terminal | OMRON | Type: Basic Unit | Control Points: 2 | Control Output 1/2: Voltage (SSR) ×2 | Control Output 3/4: Transistor (sinking) ×2 | Aux Output: None | Heater Burnout Alarm: 2 | Event Inputs: 2 | Comms: RS-485 (G3ZA port + End Unit Port A/B) | Input: TC/RTD/Analog selectable per channel | Terminal: M3 | ||
| EJ1N-TC2B-QNHB | Basic Unit, 2-point, Voltage output ×2 (SSR) + Transistor ×2, 2 HB alarms, 2 event inputs, Screwless clamp | OMRON | Type: Basic Unit | Control Points: 2 | Control Output 1/2: Voltage (SSR) ×2 | Control Output 3/4: Transistor (sinking) ×2 | Aux Output: None | Heater Burnout Alarm: 2 | Event Inputs: 2 | Comms: RS-485 (G3ZA port + End Unit Port A/B) | Input: TC/RTD/Analog selectable per channel | Terminal: Screwless Clamp | ||
| EJ1N-TC4A-QQ | Basic Unit, 4-point, Voltage output ×2 (SSR), M3 terminal | OMRON | Type: Basic Unit | Control Points: 4 | Control Output 1/2: Voltage (SSR) ×2 | Control Output 3/4: None | Aux Output: None | Heater Burnout Alarm: None | Event Inputs: None | Comms: RS-485 (End Unit Port A/B) | Input: TC/RTD/Analog selectable per channel | Terminal: M3 | ||
| EJ1N-TC4B-QQ | Basic Unit, 4-point, Voltage output ×2 (SSR), Screwless clamp | OMRON | Type: Basic Unit | Control Points: 4 | Control Output 1/2: Voltage (SSR) ×2 | Control Output 3/4: None | Aux Output: None | Heater Burnout Alarm: None | Event Inputs: None | Comms: RS-485 (End Unit Port A/B) | Input: TC/RTD/Analog selectable per channel | Terminal: Screwless Clamp | ||
| EJ1N-TC2A-CNB | Basic Unit, 2-point, Current output ×2 + Transistor ×2, 2 event inputs, M3 terminal | OMRON | Type: Basic Unit | Control Points: 2 | Control Output 1/2: Current ×2 | Control Output 3/4: Transistor (sinking) ×2 | Aux Output: None | Heater Burnout Alarm: None | Event Inputs: 2 | Comms: RS-485 (End Unit Port A/B) | Input: TC/RTD/Analog selectable per channel | Terminal: M3 | ||
| EJ1N-TC2B-CNB | Basic Unit, 2-point, Current output ×2 + Transistor ×2, 2 event inputs, Screwless clamp | OMRON | Type: Basic Unit | Control Points: 2 | Control Output 1/2: Current ×2 | Control Output 3/4: Transistor (sinking) ×2 | Aux Output: None | Heater Burnout Alarm: None | Event Inputs: 2 | Comms: RS-485 (End Unit Port A/B) | Input: TC/RTD/Analog selectable per channel | Terminal: Screwless Clamp | ||
| EJ1C-EDUA-NFLK | End Unit, 24VDC, Transistor output ×2 (sinking), RS-485 Port A/B + Connector Port A, M3 terminal | OMRON | Type: End Unit (required for Basic Unit operation) | Power Supply: 24VDC | Aux Output: Transistor (sinking) ×2 | Comms: RS-485 Port A or B / Connector Port A | Terminal: M3 | ||
| EJ1C-EDUC-NFLK | End Unit, 24VDC, Transistor output ×2 (sinking), RS-485 Port A/B + Connector Port A, Detachable connector | OMRON | Type: End Unit (required for Basic Unit operation) | Power Supply: 24VDC | Aux Output: Transistor (sinking) ×2 | Comms: RS-485 Port A or B / Connector Port A | Terminal: Detachable Connector | ||
| EJ1C-CBLA050 | G3ZA Connecting Cable, 5m, for EJ1 to G3ZA connection | OMRON | Type: Connecting Cable | Length: 5 m | Application: EJ1 Basic Unit to G3ZA Multi-channel Power Controller |
