| 
										Power supply  voltage  | 
									Output | 
										Timer  function  | 
									Features | Model | 
|---|---|---|---|---|
| 100 to 240 VAC | Relay | No | Single-function with one input/output (two circuits) | S3D2-DK | 
| Yes | S3D2-EK | |||
| No | Single-function with two inputs/one output (AND/OR operation) | S3D2-AK * | ||
| No | Flip-flop function with two inputs/one output | S3D2-BK | ||
| Yes | Multi-function with two inputs/one output | S3D2-CK * | ||
| Transistor | Yes | S3D2-CC * | ||
| 24 VDC | Relay | No | Single-function with two inputs/one output | S3D2-AKD | 
| Yes | Multi-function with two inputs/one output | S3D2-CKD | ||
| Transistor | Yes | S3D2-CCD |