Autonics TK4S-24SR Temperature Controller
The Autonics TK4S-24SR 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-24SR |
Autonics TK4S-24SR 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 |
| 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 | SSR drive(11VDC @(=)) [ON/OFF, phase, cycle] |
| 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 | Relay(250VAC~ 3A) |
| Weight | Approx. 150g(approx. 105g) |
The Autonics TK4S-24SR Temperature Controller is designed for high-precision process control with a fast 50ms sampling cycle and robust control algorithm support. It offers flexible operation with ON/OFF, P, PI, PD, and PID control modes to match the specific needs of heating or cooling systems. This model supports a wide proportional band of 0.1 to 999.9°C/℉ and allows integral and derivative time adjustments up to 9999 seconds for stable process response. Operating on a universal 100–240VAC~ 50/60Hz power input, it is compatible with global panel setups. The TK4S-24SR accepts multiple input types—thermocouples, RTDs, and analog signals—ensuring compatibility with various sensing configurations used in industry.
Durability meets precision in the TK4S-24SR, with a reliable 4-digit 7-segment LED display for process clarity and an IP65-rated front panel offering dust and water resistance for harsh operating conditions. It comes equipped with both an SSR drive output (11VDC) and a relay output (250VAC~ 3A), making it suitable for interfacing with solid-state relays and high-voltage devices. With ±0.3% F.S. display accuracy and reinforced safety features like double insulation and 2kV dielectric strength, the controller ensures consistent and secure performance. Lightweight at just 150g, it’s easy to install in compact panels while offering advanced control functions typically found in larger systems.
The Autonics TK4S-24SR is widely implemented in industrial ovens, blow molding systems, test chambers, heat tunnels, and sterilization units. Junior engineers benefit from its simple setup and visual feedback, making it ideal for first-time users. Experienced maintenance professionals value the fast tuning response and flexible output modes that allow direct connection to various actuator types. The controller is also frequently used in engineering institutes for student labs due to its ability to demonstrate practical PID loop control. Trusted by process engineers across industries, the TK4S-24SR stands out for its blend of precision, durability, and usability. For more details, visit the official Autonics TK4S product page.




