Whadda Electronic Thermostat Minikit WSHA138

Whadda
WSHA138
5410329733308
    1-5 Days
  • Description
  • More Details
  • Specifications
Available pre-assembled: VM137

Replacement for Velleman MK138

General purpose low-cost electronic thermostat with NTC temperature sensor from the Velleman Mini Kit range. Output relay with LED indicator. Suitable for a wide range of applications: Greenhouses, egg incubation, heating & cooling projects.

  • temperature range: +5°C to +30°C approx. (41°F to 86°F)
  • relay power rating: 24VDC/AC 3A

      Constructional Kit: Normal


    Manual
    Click to open


    Modifications:
    The following alterations will allow you to increase the temperature range of the MK138. To make it suitable for use as an egg incubator thermostat (37.5º) with a hysteresis of approximately ±0.4º. You will need to change the value of these components. Available from esr.co.uk using the order code listed.

    • R4 4K7 1% (Order Code 907-247)

    • R5 3k9 5% (Order Code 906-239)

    • R6 2K7 5% (Order Code 906-227)

    • R7 10M 5% (Order Code 906-610)

    • RV1 1K (Order Code 994-210)

    • Dimensions: 54 x 62 x 28mm
    Power Supply: 12Vdc / 100mA
    Pre-assembled version
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