On / Off Temperature Controllers

On-off temperature controllers (also called signallers), are simple temperature control devices. An optimal temperature is preset and when it's exceeded the output switches off. When the temperature falls below the optimal preset, the output switches on. The output value has only an 'on' or 'off' option, with no middle state.

What are on-off temperature controllers used for?

On-off temperature controllers are used for monitoring purposes in heating environments. They prevent rapid increases in temperature that may cause damage to contactors and valves by cutting off the power. These controllers are often used where there isn't a need for precision temperature control. They are beneficial in applications where the system can't handle continuous interruptions. On-off controllers are found in temperature alarms and thermostats.

Types of on-off temperature controllers

A typical example of an on-off temperature controller is the thermostat in a heating system. If the temperature drops below the preset level, the heating system will switch on, and vice versa. Another example is that of a limit controller. It protects a system against overheating or overcooling by shutting down the power if the temperature exceeds a preset level.


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กำลังดูสินค้า 1 - 20 รายการจาก 185 รายการ / Viewing 1 - 20 of 185 products
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รายละเอียดสินค้า / Description ราคา / Price Input Type Output Type Number of Inputs Number of Outputs Supply Voltage Range Size Minimum Operating Temperature Maximum Operating Temperature Panel Depth IP Rating Mounting Type Series Termination Type
RS Stock No. 762-2149
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ID+974-12V+NTC
Brand :Eliwell
THB9,040.14
Each
Units
NTC, PTC, RTD Digital 2 1 12 V -55 → +140 °C 74 x 32mm -5°C +55°C 60mm IP65 - IDPlus -
RS Stock No. 500-1036
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.701050/821-02
Brand :Jumo
THB4,531.28
Each
Units
Thermocouple 1 Relay - 1 230 V ac 0 → 500 °C 90 x 22.5mm 0°C +500°C - - DIN Rail eTRON -
RS Stock No. 497-8979
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.701050/811-31
Brand :Jumo
THB4,572.90
Each
Units
RTD 1 Relay - 1 12 → 24 V dc - 93.5 x 22.5mm 0°C +55°C 61.6mm IP20 DIN Rail eTRON -
RS Stock No. 877-1463
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IC+ 902 230V 8A + NTC
Brand :Eliwell
THB3,442.68
Each
Units
NTC, PTC Relay 1 1 230 V - 74 x 32mm -5°C +55°C 59mm IP65 Panel Mount ICPlus Screw
RS Stock No. 809-1001
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IR33S0EN00
Brand :Carel
THB4,047.85
Each
Units
NTC - - - 230 V ac - 76.2 x 34.4mm -10°C +60°C 70.5mm - - IR33 -
RS Stock No. 809-1007
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IR33S0ER00
Brand :Carel
THB5,082.47
Each
Units
NTC - - - 115 → 230 V ac - 76.2 x 101mm -10°C +60°C 80mm - - IR33 -
RS Stock No. 809-0997
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PJEZS0G000
Brand :Carel
THB4,246.53
Each
Units
NTC - - - 230 V ac - 81 x 36mm -10°C +50°C 58mm - - PJ Easy -
RS Stock No. 809-0994
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PJEZC0P000
Brand :Carel
THB4,111.03
Each
Units
NTC - - - 230 V ac - 81 x 36mm -10°C +50°C 58mm - - PJ Easy -
RS Stock No. 913-9983
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PJEZC0M000
Brand :Carel
THB5,306.79
Each
Units
Digital 3 Relay 1 3 230 V ac - 81 x 36mm - - - IP65 Panel Mount - Screw
RS Stock No. 535-0811
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.E5C2-R40K AC100-240 0-800
Brand :Omron
THB4,445.22
Each
Units
K Type Thermocouple Relay - 1 100 → 240 V ac - 48 x 48mm -10°C +55°C 86.7mm IP00, IP40, IP66 - E5C2 -
RS Stock No. 344-596
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TC4810-51-110/230VAC
Brand :Tempatron
THB3,987.42
Each
Units
PT100 Relay - 1 110 → 230 V ac - 48 x 48mm -10°C +50°C 89mm IP40 1/16 DIN - -
RS Stock No. 497-8963
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.701060/811-02
Brand :Jumo
THB5,024.33
Each
Units
RTD 1 Relay - 1 230 V ac - 76 x 36mm 0°C +55°C 56mm - Panel Mount eTRON -
RS Stock No. 511-7440
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IR33S0LR00
Brand :Carel
THB3,518.64
Each
Units
NTC - - - 12 → 24 V ac/dc -50 → +90 °C 76.2 x 34.2mm -10°C +50°C 94mm - - IR33 -
RS Stock No. 535-0748
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.E5C2-R20K AC100-240 0-1200
Brand :Omron
THB4,445.22
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 124-1045
Brand :RS PRO
THB2,214.09
Each
Units
NTC Relay 1 1 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS Stock No. 914-8473
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SRT-N118-1321-1-4-001
Brand :Simex
THB5,889.11
Each
Units
Thermoresistance Relay 3 2 230 V ac -210 → +1200 (Type J) °C, -200 → +1000 (Type E) °C, -200 → +1300 (Type N) °C, -200 → +1370 (Type K) °C, -200 → +400 (Type T) °C, -50 → +1768 (Type R) °C, -50 → +1768 (Type S) °C, +250 → +1820 (Type B) °C 110 x 80mm 0°C +50°C 67mm IP67 Wall Mount - Screw
RS Stock No. 745-7945
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PJEZS6P000
Brand :Carel
THB3,571.46
Each
Units
PTC - - - 230 V ac -50 → +90 °C 36 x 81mm - - 61mm - - PJ Easy -
RS Stock No. 117-6659
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.EMPLUS 600 NTC-PTC 230Vac
Brand :Eliwell
THB2,983.01
Each
Units
Analogue - 1 - 230 V - 74 x 32mm -5°C +55°C 59mm - Panel Mount EMPLUS 600 Lead Wire
RS Stock No. 500-1092
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.701060/822-31
Brand :Jumo
THB5,284.00
Each
Units
J L K Thermocouple 2 Relay - 2 12 → 24 V dc, 24 V ac - - 0°C +55°C - - Panel Mount eTRON -
RS Stock No. 124-1060
Brand :RS PRO
THB2,636.34
Each
Units
J Type Thermocouple, K Type Thermocouple, R Type Thermocouple, S Type Thermocouple, T Type Thermocouple Relay 1 1 24 V ac 0 → +1300 (K Type Thermocouple) °C, 0 → +1700 (R Type Thermocouple) °C, 0 → +1700 (S Type Thermocouple) °C, 0 → +400 (T Type Thermocouple) °C, 0 → +600 (J Type Thermocouple) °C 77 x 35mm 0°C +50°C 73mm IP20, IP65 Panel Mount - Screw
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