| Operation |
| 1. Adjustable - |
maintaining adjusted temperature by measuring external and internal temperature of the equipments as an expanding-liquid thermostat. If the sensor detects the heat, the liquid expands and it extends the space of diaphragm, and that power enables making and breaking contact points of the switch. It is an automatic reset product that repeats going up and down within the range of adjusted temperature. |
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| 2. Manual - |
When arrived at adjusted temperature and shut off the power, it doesn’t reset automatically and should be restarted artificially by pressing the reset button when needed. Therefore, when the first adjustability was lost. This product can be used as safety device. It can be used as anti-superheating device of all electrical equipments. |
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| Application |
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It is widely used to almost all of the heating and cooling systems that needs to adjusting temperature like hot and cool dispenser, refrigerated freezers, ovens, boiler, vending machine, and various kitchen equipment, sterilizers.
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| T103-Series |
- used as adjusting temperature of heating, warming, freezing equipments.
- temperature range: -20℃ ~ 500℃ / -28℃ ~ +260℃
- switch circuit : Single Pole Double Throw (SPDT)
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| Single Pole Single Throw (SPST) |
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| T125-Series |
- used mainly as thermostats of commercial cooking appliances
- temperature range: 100℃ ~ 500℃ / 37℃ ~ +260℃
- switch circuit: Single Pole Single Throw (SPST)
- has strong durability and solidity as special quality.
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| L117 - Series |
- manual reset-fixed type
- temperature range: 100℃ ~ 500℃ / 37℃ ~ +260℃
- switch circuit:: Single Pole Single Throw (SPST)
- used as safety device that prevents overheating and neglected accidents
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| T115-Series |
- be able to install from the outside (water proof)
- temperature range: 40℉~110℉ / -30℉~110℉ / 0℉~120℉ / -30℉~100℉ / 4℃ ~ +43℃ / -17℃ ~ -43℃
- switch circuit:: Single Pole Double Throw (SPDT)
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| T109-Series |
- be able to use at humid of polluted areas
- temperature range: 40℃ ~ 100℃ / 4℃ ~ +37℃
- switch circuit:: Single Pole Double Throw (SPDT),Double Pole Double Throw(DPDT)
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Thermostat 
PECO Thermostats 
