The three channels on the EL001 can measure any mix of temperature or switch position. The following sensors are available, all have 5 meter leads for connecting to the converter.
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.
Note: the EL001 is not waterproof.