1/16 DIN Economic PID Temperature Controller

Multiple temperature sensors (K, J, E, S, PT100, Cu50);

PID and ON/OFF Control Mode with high standard self-adjust function;

Self-adjusting function and intelligent control of the instrument to ensure long-term stability.



CHA4 series is 1/16 din economic PID Temperature Controllers including six models:

  • CHA4-RNR,  one Relay output + one Relay alarm output, 85-265V AC/DC
  • CHA4E-SNR,  one SSR output + one Relay alarm output, 24V DC
  • CHA4-RRR,  one Relay output + two Relay alarm output, 85-265V AC/DC
  • CHA4-SSR,  one SSR output + one SSR alarm + one Relay alarm output, 85-265V AC/DC
  • CHA4-INR,  one 4-20mA output + one Relay alarm output, 85-265V AC/DC
  • CHA4-DC10, one 0-10V output + two Relay alarm output, 85-265V AC/DC

Digital temperature controller available in full size: CHA4(48*48mm), CHA6(96H*48Wmm), CHA8(48H*96Wmm), CHA7( 72*72mm), CHA9(96*96mm).

Main Features

  • Multiple temperature sensor signals TC(K, J, E, S), PT100; Cu50, 4-20mA, 0-10V signal can be customized.
  • Max accuracy 0.3%F.S, sampling speed ≤ 300ms.
  • Auto-tuning PID control, easy to operate. Special cold junction compensation makes the temperature reading more accurate.
  • 6 alarm modes(high alarm, low alarm, absolute high alarm, absolute low alarm, interval alarm out of interval alarm) optional.
  • Be applicable with universal AC 85~256V or DC 24V power supply. And have a variety of dimensions for the customer to choose.

Compact size

   Easy operation

      PID control

         Fast shipment

CHA PID Temperature Controller


Model CHA Digital PID Temperature controller
Size 4 48H*48W mm
6 48H*96W mm
7 72H*72W mm
8 96H*48W mm
9 96H*96W mm
Power supply default 85~265V AC/80~300VDC
E 18~30V DC
Output OUT1 R Relay output
S SSR output
I 4-20mA
V 0-10V DC
N None
Alarm AL1 R Relay output
S SSR output
N None
Alarm AL2 R Relay output
S SSR output
N None
Input signal Default K,J,E,S,PT100,Cu50
F Customized, indicate when ordering

Power Supply:

85~265V AC    50/60HZ

or 24V AC / 24V DC

Thermocouple (K, S, E, J)

RTD (Cu50, Pt100)

Analog signals (0-50mV, 10-50mV, 0-5V DC, 0-10V DC, 1-5V DC, 2-10V DC, 4-20mA, 0-20mA, 0-10mA)

Temperature Units: Degree Celsius(℃), Fahrenheit(F)

Display Accuracy: ±0.3%F.S

Temperature Compensation: 0~50℃

Storage Temperature: -20~60℃             (no icy or condensation)

Data Storage: 10 years

Mounting Method: Flush-mounting and screw terminals

Environmental Conditions: -20~60℃         (no icy or condensation)

Humidity: 35-85% RH

Net Weight: about 120g ~ 250g

Gross Weight: 180g​ ~ 350g

Warranty: 12 months

For support, please visit support center or email us at

1 × CHA4 digital temperature controller

1 × Mounting bracket

1 × Manual