Useful for lighthouse models or a light beam alarm (set to go off when something passes between the LDR and a light beam).
This is a light sensitive switch (phototransistor or LDR) attached to 2 metres of cable with 4 mm plugs, ready to connect as an Input to FlowGo.
The Go software can decide whether or not to carry out a command or run a procedure according to whether an input is On or Off. This switch reacts to brightness. If sufficient light is shining at the switch the Input will be On. When there is not enough light (e.g. something being placed in front of the LDR) the Input will be Off.
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