Up for sale is a genuine, high-quality Fenwal 27121-20 Detect-A-Fire rate-compensated vertical mount heat detector. Designed to accurately sense surrounding air temperature changes regardless of fire growth rate, this unit is widely trusted for activating fire alarms and suppression systems in commercial, industrial, and hazardous environments.
Specifications:
Brand: Fenwal (Kidde-Fenwal)
Model: 27121-20 (Stamped 9836 / 27121-20)
Temperature Rating: 210°F (99°C)
Mounting Style: Vertical Hex Head
Shell Material: Stainless Steel
Contact Type: Normally Open (NO) — Closes on temperature rise
Electrical Ratings:
5A @ 125 VAC
0.5A @ 125 VDC
2A @ 24 VDC
1A @ 48 VDC
Certifications: UL Listed, FM Approved for Hazardous Locations (Class I, Groups A, B, C, & D; Class II, Groups E, F, & G)
You will get what you seen in the pictures.

Taxes & Import Duties
- All taxes & Import Duties and Custom charges at destination country to be paid by buyer (Not included in price).
Packaging and Handling
- 3 Business day for handling and packaging
- Profession quality packing
Return Policy
- Please contact us before making Return Request on eBay.
- We will do our best to make your return as pain free as possible.
- Return accepted within 30 days.
- Restocking Fees will be 20%
- Please check the listing properly as returns are not accepted in only for parts products.
Contact Us
- Contact us through Ebay Contact Member Service. We'll reply as soon as possible.
Up for sale is a genuine, high-quality Fenwal 27121-20 Detect-A-Fire rate-compensated vertical mount heat detector. Designed to accurately sense surrounding air temperature changes regardless of fire growth rate, this unit is widely trusted for activating fire alarms and suppression systems in commercial, industrial, and hazardous environments. Certifications: UL Listed, FM Approved for Hazardous Locations (Class I, Groups A, B, C, & D; Class II, Groups E, F, & G) All taxes & Import Duties and Custom charges at destination country to be paid by buyer (Not included in price). We will do our best to make your return as pain free as possible. Please check the listing properly as returns are not accepted in only for parts products. Contact us through Ebay Contact Member Service. We'll reply as