# Frost Alarm Relay EFST-6 by OJ Electronics – Reliable Monitoring

The **Frost Alarm Relay EFST-6**, manufactured by **OJ Electronics**, is a crucial component for monitoring and safeguarding against frost conditions in various applications. This relay, with part number 571.90.00.055, ensures reliable temperature monitoring, making it ideal for HVAC systems and industrial settings. Designed for efficiency and ease of use, the **EFST-6** provides dependable frost protection.

This **frost alarm relay** operates within a temperature range of 0-20°C and requires a 24VAC power supply. The **EFST-6-3221** relay has a 5A capacity. Its compact design and lightweight build of 240g allow easy installation in both residential and commercial setups. This product is engineered to deliver consistent performance, offering peace of mind to users requiring precise temperature control.

-   **Frost Detection:** Provides accurate monitoring to detect frost conditions.
-   **Temperature Range:** Operates effectively within a 0-20°C temperature range.
-   **Easy Installation:** Compact size allows for simple integration into existing systems.
-   **Reliable Performance:** Ensures consistent operation for dependable frost protection.
-   **Wide Application:** Suitable for diverse HVAC and industrial applications.

The **EFST-6** from **OJ Electronics** is a reliable solution for anyone needing to prevent frost damage. Its robust design and accurate monitoring capabilities make it an essential component for maintaining operational integrity in industrial and automation systems. Trust **Ram Automations** for all your industrial component needs. Contact us at [info@ramautomations.com](mailto:info@ramautomations.com).

## Details

- **Price:** 999.0 USD
- **Vendor:** OJ Electronics
- **Type:** Industrial Automation > Sensors & Relays > Frost Alarm Relay
- **Tags:** EFST-6, frost alarm relay, frost protection, HVAC, OJ Electronics, temperature monitoring

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| New | 999.00 USD | In stock |

## Images

- Frost Alarm Relay EFST-6 by OJ Electronics – Reliable Monitoring-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/oj-electronics-efst-6-frost-alarm-relay)
> Updated: 2026-09-18