Thermostat Electronic Kit MK138
Electronic Kits - Intermediate Skill Level
Thermostat electronic kit MK138
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Thermostat Electronic Kit MK138 Description
Thermostat electronic mini kit MK138 is a general purpose thermostatic switch used to effect temperature control. Thermostat uses
a NTC (negative temperature coefficient) thermistor temperature sensor to detect temperature changes. The thermostat can respond to a set point temperature range from approximately 41°F to
86°F (5°C to 30°C).
Thermostat has potentiometer set point control. The designed amount of hysteresis can be increased by decreasing the value of
fixed resistor R7.
Thermostat has a 3 amp relay output for load control. When the measured temperature is above or below the thermostat set point, either the
normally open or the normally closed relay contacts (or both) can control power to the output load device(s). For example a cooling fan, a heater or a lamp, an actuated vent, or a
Peltier thermo-electric device might be desired to effect temperature changes.
By using both the "normally open" AND the "normally closed" relay contacts on this thermostat, one set of contacts may
be used to control a cooling device while the other contacts could be used to control a heating device.
Thermostat electronic kit is rated skill level 2 (on a scale of 1 to 5) by Velleman. Thermostat kit comes with circuit board, components and
assembly instructions. User assembly is required. Also available as
Thermostat VM137 pre-assembled module which is ready to use.
Thermostat Electronic Kit Specifications
- thermostat temperature range: 41°F to 86°F (5°C to 30°C) approx.
- relay contacts rating: 24V DC/AC, 3A
- thermostat power supply: 12V DC, 100ma
- dimensions: 2.1 x 2.4 x 1.1 inches (5.3cm x 6.1cm x 2.8cm)
- thermostat electronic kit assembly is required.
Thermostat Electronic Kit Price
Thermostat electronic kit MK138 is economically priced at:
Only $ 8.79 + shipping!
Mail or FAX Order Thermostat Electronic Kit MK138
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