Buying guide
Heater Controllers
Our pick
Inkbird ITC-308S

The alternatives
Other contenders
Buying advice
For separate heating and cooling outputs
For heating and cooling outputs with a disconnectable probe, choose the Inkbird ITC-308S. Check each connected device against the applicable outlet rating.12
For phone app control
Choose the Inkbird ITC-308-WIFI for phone app control. Check the supported app and network before relying on phone access.9
For a disconnectable probe
The Inkbird ITC-308S has a disconnectable probe. Check compatible replacement-probe availability before choosing it for easier sensor servicing.2
For two temperature probes
The Inkbird ITC-306A reads two temperature probes. Follow its instructions for probe placement.2
For upper and lower temperature alerts
Choose the Inkbird ITC-306A if you want upper and lower temperature alerts on a heating-only controller. Set both alarm thresholds for your setup.3
For heating outputs only
The Inkbird ITC-306T switches heating equipment only and provides an upper-temperature alarm. It does not run a cooling fan.45
5 models / at a glance
Key differences
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Models in this comparison

Inkbird ITC-308S
- Accuracy
- 1 °F1

Inkbird ITC-306A
- Accuracy
- 2 °F2

Inkbird ITC-306T
- Accuracy
- 1 °F5
Inkbird ITC-308
- Accuracy
- 2 °F7

Inkbird ITC-308-WIFI
- Accuracy
- 2 °F7
Every specification for these products
| Specification | Inkbird ITC-308S | Inkbird ITC-306A | Inkbird ITC-306T | Inkbird ITC-308 | Inkbird ITC-308-WIFI |
|---|---|---|---|---|---|
| Max load | 1,100 W1 | 1,100 W3 | 1,100 W6 | 1,100 W6 | 1,100 W9 |
| Heating and cooling | Heating and cooling1 | Heating only3 | Heating only4 | Heating and cooling6 | Heating and cooling8 |
| Accuracy | 1 °F1 | 2 °F2 | 1 °F5 | 2 °F7 | 2 °F7 |
| Temperature range | Not published | Not published | -58–210 °F4 | Not published | Not published |
| Temperature alarm | High and low1 | High and low3 | High only5 | High and low7 | High and low8 |
| Wi-Fi app control | Not published | Not published | Not published | Not published | Yes9 |
| Probe connection | Plug in2 | Not published | Not published | Not published | Not published |
| Plug type | Not published | Not published | Not published | Not published | Not published |
Compare features
5 products
How they compare
Scroll the table to see every product and specification.
| Specification | Our pickInkbird ITC-308S | Inkbird ITC-306A | Inkbird ITC-306T | Inkbird ITC-308 | Inkbird ITC-308-WIFI |
|---|---|---|---|---|---|
| Max load | 1,100 W1 | 1,100 W3 | 1,100 W6 | 1,100 W6 | 1,100 W9 |
| Heating and cooling | Heating and cooling1 | Heating only3 | Heating only4 | Heating and cooling6 | Heating and cooling8 |
| Accuracy | 1 °F1 | 2 °F2 | 1 °F5 | 2 °F7 | 2 °F7 |
| Temperature range | Not published | Not published | -58–210 °F4 | Not published | Not published |
| Temperature alarm | High and low1 | High and low3 | High only5 | High and low7 | High and low8 |
| Wi-Fi app control | Not published | Not published | Not published | Not published | Yes9 |
| Probe connection | Plug in2 | Not published | Not published | Not published | Not published |
| Plug type | Not published | Not published | Not published | Not published | Not published |