| Product code number | Switch action | Range °F (°C) | Differential °F (°C), fixed | Maximum allowable temperature at the bulb °F (°C) |
|
|---|---|---|---|---|---|
| Each stage | Between stage | ||||
| A28AK-1C | Two SPDT switches | 30 to 110 (-1 to 43) |
2 (1.1) | 3 (1.7) | 140 (60) |
| A28AK-2C | Two SPDT switches | 60 to 130 (16 to 54) |
2 (1.1) | 3 (1.7) | 200 (93) |