LCN-TU4HL Low Voltage Binary Sensor
To be used where total decoupling of an external sense voltage of 12..24V, max. 20mA is required.

This unit also has a build in power supply (120/240V -> 13V) that can be used where galvanic coupling to Neutral is allowed.

Input voltage low: 0..8V DC
Input voltage high: 12..30V DC
Safety classification IP20
Dimensions (l. w. h.) 4.5” x 1.4” x 2.6”