Tempro has developed an easy immersion controller cross reference to help determine if our immersion controller can replace others on the market.
Tempro offers immersion controllers as direct replacements for many existing immersion type temperature control options on the market. With competitive pricing, faster lead times, and the ability to customize thermostats to meet specific application requirements, Tempro stands out as a top producer of immersion controls.
Easy Cross Reference Guide
To assist you in finding the right replacement immersion controller, we’ve created a simple cross-reference guide. If you have a part number found in one of the series listed below, match it to our part number. For more information, call us or visit our online store.
Benefits of Choosing Tempro
- Wider adjustable temperature range compared to other controllers, to support high limit, low limit and circulator applications.
- Faster Lead Times: Stocked and shipped directly from Eau Claire, WI, making it a more available option than competitors.
- Customization Options: Universal replacement option for current models in the marketplace, as well as the ability to tailor our products to your specific application needs.
- Private labeling options available.
Applications
Tempro’s immersion controllers are ideal for use in:
- High Limit, Low Limit and Circulator Control for Oil-Fired Gravity System or Hydronic System with Domestic Hot Water
- Immersion Controller for Gas-Fire System with Domestic Hot Water
Need Assistance?: If your part number isn’t listed, our customer service team is here to help. Call us directly with your switch or application requirements, and a representative will assist you promptly.
Certified Quality: Senasys switches are UL/cUL recognized. Our dedicated customer service is ready to help you find the right switch for your application.
Immersion Controller Cross Reference
Find your replacement immersion controller using the cross-reference guide below, or download the PDF document here. For further assistance, contact our support team.
| Tempro | Honeywell | White-Rodgers/Emerson | Johnson Controls/PENN | |
| TP Series | L400/L600 Series | 1100 Series | A19 Series | |
| Function | High Limit, Low Limit and Circulator | High Limit, Low Limit and Circulator | High Limit, Low Limit and Circulator | High Limit and Low Limit |
| Adj. Temperature Range | 65°-240° | 40°F-290°F | 100°-240°F | 100°-240°F |
| Fixed Differential | 6°F | 2°-30°F | 10°F | 6°F |
| Voltage | 120/250VAC | 110/120/200/240/277VAC | 120/240VAC | 120/208/240VAC |
| Resistive Load | 16A @ 120VAC | 16A @ 120VAC | 7.4A @ 120VAC | 16A @ 120VAC |
| Sensor | Remote sensor, immersion well and direct mount | Remote sensor, immersion well and direct mount | Remote sensor, immersion well and direct mount | Remote sensor and immersion well |
| Mounting Style | Horizontal or Vertical | Horizontal or Vertical | Horizontal or Vertical | Horizontal or Vertical |
| Switch Function | SPDT & SPST | SPDT & SPST | SPDT & SPST | SPDT & SPST |
| Approvals | UL and cUL | UL and cUL | UL and CSA | UL and cUL |
| Reset | Auto or Manual | Auto or Manual | Auto | Auto or Manual |
| Enclosure Rating | NEMA 1 | NEMA 1 | NEMA 1 | NEMA 1 |



