| Brand | Honeywell |
| Unit Type | Unit |
| Power Source | Corded Electric |
| Voltage | 24 V |
| Model | Honeywell THM5421R1021 |
| Amperage | 1.0 A |
| Material | Plastic |
| Compatible Product | Central Air Conditioner |
| Power Phase | 1 Phase |
Perfect working condition when removed from our setup, note thermostat is not included The Honeywell THM5421R1021 RedLINK Equipment Interface Module (EIM) is designed for use with central air conditioners. Specifically, it is compatible with brands such as Honeywell, Resideo, Trane, and American Standard. This module operates on a 24V voltage and has an amperage of 1.0 A. The model THM5421R1021 from Honeywell is known for its reliability and compatibility with various HVAC systems, making it a valuable component for maintaining and controlling heating, ventilation, and air conditioning systems in a business or industrial setting.