Elco Lighting T-SWITCH Accessory for Recessed Fixtures for KEM Battery BackupsElco Lighting T SWITCH T SWITCH Product Description Elco Lighting Accessory for Recessed Fixtures for KEM Battery Backups Features: T SWITCH for KEM Battery Backups. T SWITCH LD1 for KEM LD1, KEM LD2, and KEM LD3. T SWITCH LD5 for KEM LD5. About Elco Lighting: Founded in 1991 by its president, Steve Cohen, ELCO Lighting develops and markets lighting products for commercial and residential applications. Founded on the philosophy that high quality