| Compatible Brand | Honeywell |
| Item Thickness | 1.25 in |
| Power Source | Corded Electric |
| Material | Plastic |
| MPN | THM5421R1021 |
| Item Length | 6.5 in |
| Compatible Product | Thermostat |
| Power Phase | 1 Phase |
| Brand | Honeywell |
| Voltage | 24 V |
| Model | Honeywell THM5421R1021 |
| Amperage | 2 A |
| Item Weight | 0.9 lb |
| Item Width | 4.25 in |
Honeywell RedLINK Equipment Interface Module EIM THM5421R1021 24V 2A