Specification for Illuminating unit; 22mm; 3SU1.5; -25÷70°C; Illumin: LED; 24VAC
| Mounting | for back plate |
| Supply voltage | 24V AC, 24V DC |
| Operating temperature | -25...70°C |
| Leads | screw terminals |
| Illumination | LED |
| Lamp colour | red |
| Type of switch accessories | illuminating unit |