Eltako Lighting Accessories TDR 633495 - Eltako 61100301, The Eltako 61100301 TDR is a versatile flush-mount, recess-mount timer relay designed for 230V applications. Manufactured by Eltako, it is ideal for controlling lighting systems and electrical devices in residential and commercial settings. Its reliability and ease of installation make it a popular choice for building automation and energy management systems. Eltako 61100301 TDR Time Relay Recess-Mount 230V Zero Crossing