Weidmuller offers two modules for applications where on-off-auto switches are used to allow manual or automatic control of a device. The first is a 3 position switch rated up to 120V, 5A. The first of the two Emphatec SigNext On-Off-Auto Modules is the 330221 which is a 3 position switch rated up to 120V, 5A. A unique feature of this device is a pair of 24Vdc digital outputs that indicate when the switch is in the "Auto" position.