Eltako Indoor Light Fittings TDR 622259 - Eltako 23100831, Eltako 23100831 is a staircase light timer designed for time-controlled lighting applications. It features a DIN rail mount and operates at 230 V. Commonly used in staircases, it ensures energy-efficient timed illumination. Eltako 23100831 TDR Din Rail Relay 230V ESL/LED Noiseless 0.4W Standby