CM-330 and CM-333 battery powered models supplied with (2) AA alkaline batteries.Lithium batteries recommended for environments below 0?C (32?F). To order, select option below.CM-324 Series (original) single relay wired hands-free switches features an operating range of 1-30" , adjustable time delay of 1-5 seconds, and provides superior performance in all ambient lighting conditions.CM-325 Series hands-free switches are specifically designed for use in healthcare and facilities where highly reflective surfaces (chrome or polished stainless steel) cause standard touchless switches to false activate.Add 'F' to graphic option for French language.Main FeaturesNarrow (jamb), single and and double gang faceplatesPolycarbonate (black) and stainless steel faceplatesAdvanced active infra-red technology with fast responseHeavy duty 3 or 5 Amp rated relayAdjustable operating range up to 28" , refer to model specification