Plug-In Timeclock with 24hr analogue face Adjust in 15min incriments Timer Over-ride switch Suitable for use with Onga 4352 and Waterco Portapac Spa Hot Pumps to provide automatic filtration or prevent heat-on-demand function during the night. 240V, 50Hz, 10A - not suitable for use where exposed to the elements - keep weather protected. Not suitable for use with a PDL RCD Plug Top on the spa power lead.