The three channels on the EL001 can measure any mix of temperature, light level or switch position. The following sensors are available, all have 5 meter leads for connecting to the converter.
EL031 Light level sensor. The EL031 light sensor gives a qualitative measure of light intensity. It has a logarithmic response making it useful for a wide range of light levels, both visible and infra red.
EL029 Switch position / Door switch sensor The switch module is commonly used to monitor whether a door is open or closed. In normal use a (supplied) magnet is attached to the door to be monitored and the EL029 to the door frame. Alternatively an external microswitch (not supplied) can be wired in. The display on the logger reports either 'Open' or 'Closed'.
EL015 Temperature sensor The EL015 is a precision resistive sensor suitable for measuring temperature from -30°C to +70°C. Unless the temperature you need to measure is outside this range this sensor represents the best choice for measuring temperature.
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