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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Description Prix 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
N° de stock RS 762-2130
Référence fabricantID+961-12V+NTC
MarqueEliwell
113,48 €
Each
Unité
NTC, PTC, RTD Digital 1 1 12 V -50 → +99 °C 74 x 32mm -5°C +55°C 60mm IP65 - IDPlus -
N° de stock RS 479-6698
Référence fabricantID 985 LX-12V-8A-PTC
MarqueEliwell
205,41 €
Each
Unité
PTC Relay - 4 12 V ac/dc -50 → +140 °C 74 x 32mm -5°C +55°C 60mm IP65 Panel Mount ID 985LX Screw
N° de stock RS 809-0985
Référence fabricantPJEZY0H000
MarqueCarel
104,48 €
Each
Unité
NTC - - - 230 V ac - 81 x 36mm -10°C +50°C 58mm - - PJ Easy -
N° de stock RS 535-0811
Référence fabricantE5C2-R40K AC100-240 0-800
MarqueOmron
146,00 €
Each
Unité
K Type Thermocouple Relay - 1 100 → 240 V ac - 48 x 48mm -10°C +55°C 86.7mm IP00, IP40, IP66 - E5C2 -
N° de stock RS 376-3704
Référence fabricantTC4810-05-110/230VAC
MarqueTempatron
114,72 €
Each
Unité
K Type Thermocouple Relay - 1 110 → 230 V ac - 48 x 48mm -10°C +50°C 89mm IP40 1/16 DIN - -
N° de stock RS 762-2149
Référence fabricantID+974-12V+NTC
MarqueEliwell
237,38 €
Each
Unité
NTC, PTC, RTD Digital 2 1 12 V -55 → +140 °C 74 x 32mm -5°C +55°C 60mm IP65 - IDPlus -
N° de stock RS 509-0878
Référence fabricantDR 983 PTC
MarqueEliwell
222,31 €
Each
Unité
PTC - - - 230 V ac - 70 x 85mm -5°C +55°C 61mm - - DR 983 -
N° de stock RS 841-7958
Référence fabricant6.564.010.309
MarqueKubler
294,62 €
Each
Unité
mV, PT100, Resistance, Thermocouple - - - 10 → 30 V dc - 96 x 48mm -20°C +65°C 90.5mm - - CODIX 564 -
N° de stock RS 511-7456
Référence fabricantIR33Y0LR00
MarqueCarel
131,12 €
Each
Unité
NTC - - - 12 → 24 V ac -50 → +90 °C 76.2 x 34.2mm -10°C +50°C 94mm - - IR33 -
N° de stock RS 791-5980
Référence fabricant6.564.010.000
MarqueKubler
213,74 €
Each
Unité
RTD, Thermocouple - - - 90 → 260 V ac - 96 x 48mm -20°C +65°C 90.5mm - - CODIX 564 -
N° de stock RS 467-131
Référence fabricant701061/822-32/000
MarqueJumo
232,89 €
Each
Unité
RTD 4 Relay - 3 12 → 24 V ac/dc - 76 x 36 mmmm 0°C +55°C - - Panel Mount eTRON M100 -
N° de stock RS 339-0104
Référence fabricantDTC410-02-ML
MarqueTempatron
158,42 €
Each
Unité
RTD - - - 10 → 32 V ac/dc -99 → +400 °C 48 x 48mm -10°C +50°C 84.5mm - - - -
N° de stock RS 339-0097
Référence fabricantDTC410-01-MH
MarqueTempatron
158,42 €
Each
Unité
Thermocouple - - - 90 → 260 V ac -99 → +999 °C 48 x 48mm -10°C +50°C 84.5mm - - - -
N° de stock RS 809-0975
Référence fabricantIREVC7HN00
MarqueCarel
178,82 €
Each
Unité
NTC - - - 230 V ac - 76.2 x 34.7mm - - 79.5mm - - IR33+ -
N° de stock RS 809-0966
Référence fabricantIREVS0LN00
MarqueCarel
103,05 €
Each
Unité
NTC - - - 24 V ac - 76.2 x 34.7mm - - 79.5mm - - IR33+ -
N° de stock RS 198-491
Référence fabricantLR04841-103
106,66 €
Each
Unité
PT100 Relay 1 1 200 → 260 V ac - 48 x 48 (1/16 DIN)mm -10°C +50°C 86mm IP50 Panel Mount STATOP -
N° de stock RS 736-5014
Référence fabricantD280-112-0000D-000
MarqueP.M.A
344,27 €
Each
Unité
B Type Thermocouple, C Type Thermocouple, Current, D Type Thermocouple, E Type Thermocouple, J Type Thermocouple, K Type Thermocouple, L Type Thermocouple, N Type Thermocouple, PT1000 Type Resistance Transducer, R Type Thermocouple, S Type Thermocouple, T Type Thermocouple, Voltage - - - 90 → 250 V ac 0 → +1760 (R Type Thermocouple) °C, 0 → +1760 (S Type Thermocouple) °C, 0 → +1820 (B Type Thermocouple) °C, 0 → +2315 (C Type Thermocouple) °C, 0 → +2315 (D Type Thermocouple) °C, 0 → 10 V, 0 → 20 mA, -100 → +1000 (E Type Thermocouple) °C, -100 → +1200 (J Type Thermocouple) °C, -100 → +1300 (N Type Thermocouple) °C, -100 → +1350 (K Type Thermocouple) °C, -100 → +900 (L Type Thermocouple) °C, -2.5 → 115 mV, -200 → +200 (Pt1000 Type Resistance Transducer) °C, -200 → +400 (T Type Thermocouple) °C, -200 → +850 (Pt100 Type Resistance Transducer) °C, -25 → 1150 mV, -25 → 90 mV, -5 → 5 V, -500 → 500 mV 48 x 96mm 0°C +60°C 118mm - - D280-1 -
Nouveau
N° de stock RS 201-1665
Référence fabricant00721265
MarqueJumo
115,00 €
Each
Unité
PT100, Thermocouple Analogue Relay 5 2 230 V - 90mm x 21.5mmmm - - - - - eTRON T100 -
N° de stock RS 745-7939
Référence fabricantPJEZSNP000
MarqueCarel
94,20 €
Each
Unité
NTC - - - 230 V ac -50 → +90 °C 36 x 81mm - - 61mm - - PJ Easy -
N° de stock RS 481-7824
Référence fabricantPA201.004AX01
MarqueBaumer
115,30 €
Each
Unité
- - - - 100 → 300 V dc, 85 → 265 V ac - - - - - - - PA201 -