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Search - External
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Therma-Hygrometer - Internal & External
This Therma-Hygrometer simultaneously displays both the humidity and temperature in addition to indicating and recording the maximum and minimum readings. Utilising the internal sensor the instrument measures temperature over the range of 0 to 50 °C. The external remote probe with integrated three metre lead measures both temperature and humidity over the range of -20 to 70 °C and 10 to 99 %rh. This therma-hygrometer is ideal for monitoring both tempera..
£22.95
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13mm Barbed to 3/4" Thread Connector (Internal and External Thread)
Allows a barb fitting off a tank or reservoir. Ideal for a 27mm hole. The inner thread allows for both internal and external barb fittings...
£2.95
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Hydor External Tank Heater 300W
The Hydor ETH External Thermal Heater is the first unique external heater for reservoirs with the exclusive PTC (Positive Thermal Coefficient) technology. The self-timing PTC heating element guarantees maximum safety against any risk of overheating and blowing. This extra safe element and the durable materials used mean that this heater is both energy efficient, safe and long lasting. The ETH heater can only be used vertically, it is ideal to use in a ca..
£82.95
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Gavita ECM1 External Contactor Module
For our EL2 controllers we developed an External Contactor Module, the ECM1. As the Master Controller works on a low voltage output, it is not capable of switching auxiliary equipment. With the ECM1 you can extend the functionality of your EL2 controller to switch auxiliary equipment, such as heaters, dehumidifiers and CO2 equipment during the lights on or lights off cycle, according to the controller set lighting hours. The Gavita Master controller EL2 h..
£109.95
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Bluelab External Lockout and Alarm Box
Connect external switches to your Bluelab Pro Controller for a complete dosing solution. Protect your crops from overdosing or system failure - Enjoy peace of mind and complete your dosing system You can use the Bluelab External Lockout and Alarm Box to connect your Bluelab Pro Controller to external switches. When these switches are activated, the Bluelab Pro Controller will automatically be placed in lockout mode and no further dosing will occur until..
£51.95
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