| 51 | 621-3580R | Honeywell | Honeywell 621-3580R Input module | instock |
| 52 | 621-3600 | Honeywell | Honeywell 621-3600 48V DC Sink Input | instock |
| 53 | 621-3650 | Honeywell | Honeywell 621-3650 48V DC Sink Input | instock |
| 54 | 621-4300 | Honeywell | Honeywell 621-4300 5V DC Input | instock |
| 55 | 621-4350 | Honeywell | Honeywell 621-4350 5V DC TTL Input | instock |
| 56 | 621-2175 | Honeywell | Honeywell 621-2175 115V AC Output 0.5 A | instock |
| 57 | 621-2200 | Honeywell | Honeywell 621-2200 230V AC Output | instock |
| 58 | 621-2201 | Honeywell | Honeywell 621-2201 230V AC Isolated Output 6 Point | instock |
| 59 | 621-2500 | Honeywell | Honeywell 621-2500 24V AC Output | instock |
| 60 | 621-2550 | Honeywell | Honeywell 621-2550 24V Output | instock |
| 61 | 621-3300 | Honeywell | Honeywell 621-3300 5V DC Input | instock |
| 62 | 621-3350 | Honeywell | Honeywell 621-3350 24V DC Sink Input | instock |
| 63 | 621-3450 | Honeywell | Honeywell 621-3450 12V DC Sink Input | instock |
| 64 | 621-3500 | Honeywell | Honeywell 621-3500 12-24 DC Sink Input | instock |
| 65 | 621-3502 | Honeywell | Honeywell 621-3502 12-24V DC Fast Response Input | instock |
| 66 | 621-1200 | Honeywell | Honeywell 621-1200 230V AC / DC Input | instock |
| 67 | 621-1201 | Honeywell | Honeywell 621-1201 230V AC / DC Isolated Input 6 Point | instock |
| 68 | 621-1250 | Honeywell | Honeywell 621-1250 16 Point 240V AC Input | instock |
| 69 | 621-1251 | Honeywell | Honeywell 621-1251 16 Point 240V AC Input Isolated | instock |
| 70 | 621-1500 | Honeywell | Honeywell 621-1500 24V AC Input | instock |
| 71 | 621-1550 | Honeywell | Honeywell 621-1550 24V AC Input | instock |
| 72 | 621-2100 | Honeywell | Honeywell 621-2100 230V AC Output | instock |
| 73 | 621-2101 | Honeywell | Honeywell 621-2101 115V AC Isolated Output 6 Point | instock |
| 74 | 621-2102 | Honeywell | Honeywell 621-2102 115V AC Output Self Protected | instock |
| 75 | 621-2150 | Honeywell | Honeywell 621-2150 115V AC Output | instock |
