---
product_id: 254742550
title: "HD135F Fyrnetics Hardwire Heat Detector with Battery Backup"
brand: "kidde"
price: "₨1487"
currency: SCR
in_stock: true
url: https://www.desertcart.sc/products/254742550-hd135f-fyrnetics-hardwire-heat-detector-with-battery-backup
store_origin: SC
region: Seychelles
---

# 9V battery backup for power outages Connects up to 24 units for full home coverage 135°F heat detection threshold HD135F Fyrnetics Hardwire Heat Detector with Battery Backup

**Brand:** kidde
**Price:** ₨1487
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay ahead of danger with Kidde’s smart heat detection!

## Quick Answers

- **What is this?** HD135F Fyrnetics Hardwire Heat Detector with Battery Backup by kidde
- **How much does it cost?** ₨1487 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/254742550-hd135f-fyrnetics-hardwire-heat-detector-with-battery-backup)

## Best For

- kidde enthusiasts

## Why This Product

- Trusted kidde brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart LED Indicators:** Dual LEDs provide real-time status updates—green for power, red for alarm conditions.
- • **Seamless Connectivity:** Link up to 24 Kidde units for synchronized alerts across your entire property.
- • **Precision Heat Sensing:** Detects dangerous temperatures above 135°F, protecting your home beyond smoke alarms.
- • **Uninterrupted Protection:** 9V battery backup ensures continuous operation even during power failures.
- • **Certified Safety Assurance:** UL certified with compliance to NFPA and California Fire Marshal standards for trusted reliability.

## Overview

The Kidde HD135F Fyrnetics Hardwire Heat Detector combines advanced heat sensing technology with a reliable 9V battery backup and the ability to interconnect up to 24 units. Designed for areas prone to false smoke alarms, it detects temperatures above 135°F and features dual LED indicators for clear status updates. UL certified and compliant with major safety standards, it offers professional-grade protection for your home or workspace.

## Description

Kidde HD135F Fyrnetics Hardwire Heat Detector with Battery Backup

## Features

- Item Category: Gas Smoke Fire Alarm
- Item Trademark: Kidde
- manufacturer: Generic

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Kidde |
| Part number | HD135F |
| Item Weight | 295 g |
| Product Dimensions | 15.24 x 12.7 x 5.08 cm; 295 g |
| Batteries | 1 9V batteries required. (included) |
| Item model number | HD135F |
| Style | Compact |
| Power source type | Battery Powered |
| Voltage | 120 Volts (AC) |
| Item Package Quantity | 1 |
| Batteries Included? | Yes |
| Batteries Required? | No |

## Product Details

- **Brand:** Kidde
- **Style:** Compact
- **Power source:** Battery Powered
- **Product dimensions:** 10.2D x 10.2W x 5.1H centimeters
- **Item weight:** 295 Grams

## Images

![HD135F Fyrnetics Hardwire Heat Detector with Battery Backup - Image 1](https://m.media-amazon.com/images/I/61yRMzm7KbL.jpg)

## Questions & Answers

**Q: Does the Kidde Hardwired Heat Detector operate in below zero temperatures?**
A: Yes, the detector has an operating range of -20F to +100F (-29C and +38C ).

**Q: Does this Kidde Hardwired Heat Detector interconnect with other alarms?**
A: Yes, the Kidde Hardwired Heat Detector can interconnect with up to 24 detectors, they must be Kidde detectors with AC interconnect.

**Q: Does the Kidde Hardwired Heat Detector alert to slow rising temperatures or only to rapid rising temperatures?**
A: The HD135F is a fixed temperature alarm and will activate at 1350F with tolerance. It does not have a rate of rise feature.

**Q: Does the Kidde Hardwired Heat Detector have to be hardwired or can you just use the battery?**
A: Yes. The Kidde Hardwired Heat Detector is a hardwired product and should be connected as such in order to function properly.

**Q: Is this Kidde Hardwired Heat Detector UL certified?**
A: Yes. The Kidde Hardwired Heat Detector has passed strict testing to meet UL 539 standards.

## Frequently Bought Together

- Kidde Heat Detector, Hardwired with Battery Backup & 2 LEDs, Interconnect Capability, Ideal for Garages
- Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack
- Kidde Hardwired Smoke & Carbon Monoxide Detector, 10-Year Battery Backup, Voice Alerts, Interconnectable LED Warning Light Indicators

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**Shop now:** [https://www.desertcart.sc/products/254742550-hd135f-fyrnetics-hardwire-heat-detector-with-battery-backup](https://www.desertcart.sc/products/254742550-hd135f-fyrnetics-hardwire-heat-detector-with-battery-backup)

---

*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-02-09*