Autonics TK4S-B4RN Temperature Controller
The Autonics TK4S-B4RN Temperature Controller offers ON/OFF, P, PI, PD, PID control method, 100-240VAC~ 50/60Hz power supply, 4-digit 7-segment LED, 50ms. Manufactured by Autonics under the Autonics Temperature Controller category, this model belongs to the TK Series.

| Brand | Autonics |
| Product Type | Temperature Controller |
| Model Number | TK4S-B4RN |
Autonics TK4S-B4RN Temperature Controller – Technical Specifications
| Specification | Value |
|---|---|
| Power supply | 100-240VAC~ 50/60Hz |
| Sampling cycle | 50ms |
| Display method | 4-digit 7-segment LED |
| Control method | ON/OFF, P, PI, PD, PID |
| Proportional band | 0.1 to 999.9℃/℉(0.1 to 999.9%) |
| Integral time | 0 to 9999 sec |
| Derivative time | 0 to 9999 sec |
| Control period | Relay output, SSR drive output: 0.1 to 120.0 sec Current output or SSR drive output selectable: 1.0 to 120.0 sec |
| Manual reset | 0.0 to 100.0% |
| Environment_Ambient temperature | -10 to 50℃, storage: -20 to 60℃ |
| Environment_Ambient humidity | 35 to 85% RH, storage: 35 to 85% RH |
| Insulation type | Double insulation or reinforced insulation(mark: @(INS), dielectric strength between the measuring input part and the power part: 2kV) |
| Option input | CT, Digital(DI-1) |
| Protection structure | IP65(front panel) |
| Display accuracy_CT input | ±5% F.S. ±1-digit |
| Input specification | Thermocouple: K(CA), J(IC), E(CR), T(CC), B(PR), R(PR), S(PR), N(NN), C(TT), G(TT), L(IC), U(CC), Platinel IIRTD: DPt100Ω, DPt50Ω, JPt100Ω, Cu100Ω, Cu50Ω, Nikel 120ΩAnalog: 0-100mV, 0-5V, 1-5V, 0-10V0-20mA, 4-20mA |
| Option output | Alarm 1/2, RS485 comm. |
| Display accuracy_RTD | •At room temperature(23℃±5℃):(PV ±0.3% or ±1℃, select the higher one) ±1-digit•Out of room temperature:(PV ±0.5% or ±2℃, select the higher one) ±1-digit |
| Display accuracy_Thermocouple | •At room temperature(23℃±5℃):(PV ±0.3% or ±1℃, select the higher one) ±1-digit•Out of room temperature:(PV ±0.5% or ±2℃, select the higher one) ±1-digit |
| Hysteresis(adjustable sensitivity) | RTD/Thermocouples: 1 to 100℃/℉(0.1 to 100.0℃/℉) variable Analog: 1 to 100-digit |
| Control output 1 | Relay(250VAC~ 3A) |
| Display accuracy_Analog | •At room temperature(23℃±5℃): ±0.3% F.S. ±1-digit•Out of range of room temperature: ±0.5℃% F.S. ±1-digit |
| Control output 2 | - |
| Weight | Approx. 150g(approx. 105g) |
The Autonics TK4S-B4RN is a compact and powerful High Performance PID Temp Controller designed for real-time thermal feedback with a 50ms sampling cycle. It supports all major control methods—ON/OFF, P, PI, PD, and PID—giving engineers complete flexibility in tuning system behavior based on application needs. The unit runs on a standard 100–240VAC 50/60Hz power supply, making it compatible with most industrial setups.
Engineers can fine-tune the proportional band (0.1 to 999.9%), integral time (0–9999 sec), and derivative time (0–9999 sec) to suit both fast and slow thermal dynamics. The controller accepts a wide range of sensor inputs—thermocouples (K, J, R, S, T, B, etc.), RTDs like Pt100 and Cu50, and analog signals (4–20mA, 0–10V)—ensuring excellent compatibility with legacy and modern systems. The display accuracy is ±0.3% full scale for RTD, thermocouple, and analog under normal operating temperature (23°C ±5°C), ensuring stable readouts and minimal error margin in critical processes.
The control output includes a 250VAC~ 3A relay, and optional RS485 communication makes remote monitoring and data logging possible in PLC-integrated environments. The front panel is rated IP65 for protection against dust and splashes, while double insulation with 2kV dielectric strength enhances operational safety in high-voltage zones. At just 150g, the TK4S-B4RN fits easily into tight control panels. With built-in alarm output options and configurable manual resets, this controller supports high-reliability industrial workflows without complexity.
Whether you're building a new panel or modernizing a legacy machine, the TK4S-B4RN delivers unmatched reliability, efficiency, and customization. For other models or documentation, visit the Autonics Temperature Controllers hub or explore the full Autonics Sensors and Controllers range at IndMALL.




