| Relay Type | No. of Inputs | Inputs | Immediate Safety Outputs | Delayed Safety Outputs | Time Delay | Immediate Auxiliary Outputs | Power Supply | Cat. No. |
| Dual Input (DI) | 2 dual-channel | 1 N.C., 2 N.C., OSSD, Safety Mat | 2 N.O. | — | — | 1 S.S. | 24V | 440R-D22R2 |
| Dual Input Solid-State Output (DIS) | 2 S.S. | — | 440R-D22S2 |
| Single Input (SI) | 1 dual-channel | 1 N.C., 2 N.C., OSSD, Safety Mat | 2 N.O. | — | — | 1 S.S. | 24V | 440R-S12R2 |
| Compatible Input (CI) | 3 N.O. | — | 440R-S13R2 |
| Guardlocking Proximity (GLP) | 1 dual-channel
2 PNP | 2 N.C., OSSD | 2 S.S. | — | — | 1 S.S. | 24V | 440R-GL2S2P |
| Expansion Module (EM) | 1 single-wire safety | — | 4 N.O. | — | — | 1 S.S. | 24V | 440R-EM4R2 |
| Expansion Module Time Delayed (EMD) | DI/SI: 2 N.O.
CI: 3 N.O.
DIS: 2 PNP (14, 24); 2 Decoupled (34, 44)
EM: 4 N.O.
EMD: 4 N.O. delayed
DIS/GLP: 2 PNP safety, 2 PNP Lock | 4 N.O. | 100 ms ... 300 s on or off delay
100 ms ... 20 s jog | 440R-EM4R2D |
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