--- product_id: 496181522 title: "GEYA Single Phase Voltage Relay Adjustable Over or Under Voltage Protection Monitor Relay 1SPDT 10A (GRV8-01,AC/DC110V-240V)" brand: "geya" price: "4304779₫" currency: VND in_stock: true reviews_count: 4 category: "Geya" url: https://www.desertcart.vn/products/496181522-geya-single-phase-voltage-relay-adjustable-over-or-under-voltage store_origin: VN region: Vietnam --- # True RMS voltage control <1% accuracy Ultra-compact 18mm DIN rail mount Adjustable 0.1s-10s time delay GEYA Single Phase Voltage Relay Adjustable Over or Under Voltage Protection Monitor Relay 1SPDT 10A (GRV8-01,AC/DC110V-240V) **Brand:** geya **Price:** 4304779₫ **Availability:** ✅ In Stock ## Summary > ⚡ Protect your power, perfect your uptime. ## Quick Answers - **What is this?** GEYA Single Phase Voltage Relay Adjustable Over or Under Voltage Protection Monitor Relay 1SPDT 10A (GRV8-01,AC/DC110V-240V) by geya - **How much does it cost?** 4304779₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/496181522-geya-single-phase-voltage-relay-adjustable-over-or-under-voltage) ## Best For - geya enthusiasts ## Why This Product - Trusted geya brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Powerhouse:** Ultra-small 18mm width fits seamlessly into tight control panels without sacrificing performance. - • **Robust & Certified:** CE & CB certified with 10A silver contact rated for 240V, built to safeguard your critical systems. - • **Clear Status Insight:** LED indicator instantly shows relay working status, keeping you informed at a glance. - • **Precision Voltage Guard:** True RMS measurement ensures <1% voltage accuracy for reliable equipment protection. - • **Customizable Response Time:** Adjust delay from 0.1 to 10 seconds to perfectly match your system’s needs and avoid false triggers. ## Overview The GEYA GRV8-01 Single Phase Voltage Relay offers precise over/under voltage protection with true RMS voltage measurement and adjustable time delay. Its ultra-compact 18mm DIN rail design fits tight spaces, while a clear LED status indicator and robust 10A silver contacts ensure reliable operation. Certified for safety and backed by an 18-month guarantee, it’s ideal for safeguarding electrical equipment and compressors in professional setups. ## Description Over/Under-Voltage protection for electrical equipment or compressors. Emergency / backup power switch control.Theory:Voltage Relay Usage:Protective Protect Feature:Sealed Power Source:DC Function:Over-voltage or Under-voltage Protection Output Contact:1SPDT Rated Current:10A Rated Frequency:50/60Hz Time Delay:Adjustable 0.1s-10s, 10% Certificate:CE CB Guarantee:18months Review: it works well. - works well with my solar system Review: Räddar huvudsäkringen - Fungerar bra, men är lite svår att ställa in på rätt spänning. Hysteresens minsta värde , 5%, är i högsta laget ibland. ## Features - Controls its own supply voltage(True RMS measurement) - User may select operation mode through knob - Voltage measurement accuracy<1% - Relay Status:Its working status is indicated by the LED indicator. - Product Size:Ultra-small size, only 18mm width, 35mm rail mounting. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09WYKDMCH | | Best Sellers Rank | #189,581 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #42 in Voltage Monitoring Relays | | Brand | GEYA | | Brand Name | GEYA | | Coil Resistance | 10 Ohms | | Coil Voltage | 240 Volts | | Connector Type | Screw | | Contact Current Rating | 10 Amps | | Contact Material | Silver | | Contact Type | Normally Open | | Country of Origin | USA | | Current Rating | 10 Amps | | Customer Reviews | 4.0 out of 5 stars 7 Reviews | | Manufacturer | ZHEJIANG GEYA ELECTRICAL CO.,LTD | | Maximum Switching Current | 10 Amps | | Maximum Switching Voltage | 240 Volts | | Model Number | GRV8-01 AD240 | | Mounting Type | DIN Rail Mount | | Number of Terminals | 2 | | Operation Mode | Manual | | Part Number | GRV8-01 AD240 | | Specification Met | Yes | | UPC | 736961740654 | | Wattage | 57600 Watts | ## Product Details - **Connector Type:** Screw - **Contact Material:** Silver - **Contact Type:** Normally Open - **Current Rating:** 10 Amps - **Mounting Type:** DIN Rail Mount ## Images ![GEYA Single Phase Voltage Relay Adjustable Over or Under Voltage Protection Monitor Relay 1SPDT 10A (GRV8-01,AC/DC110V-240V) - Image 1](https://m.media-amazon.com/images/I/61DZo8uoFhL.jpg) ![GEYA Single Phase Voltage Relay Adjustable Over or Under Voltage Protection Monitor Relay 1SPDT 10A (GRV8-01,AC/DC110V-240V) - Image 2](https://m.media-amazon.com/images/I/61ogBFbqmSL.jpg) ![GEYA Single Phase Voltage Relay Adjustable Over or Under Voltage Protection Monitor Relay 1SPDT 10A (GRV8-01,AC/DC110V-240V) - Image 3](https://m.media-amazon.com/images/I/61CP-oqQH2L.jpg) ![GEYA Single Phase Voltage Relay Adjustable Over or Under Voltage Protection Monitor Relay 1SPDT 10A (GRV8-01,AC/DC110V-240V) - Image 4](https://m.media-amazon.com/images/I/61XMsltpXlL.jpg) ![GEYA Single Phase Voltage Relay Adjustable Over or Under Voltage Protection Monitor Relay 1SPDT 10A (GRV8-01,AC/DC110V-240V) - Image 5](https://m.media-amazon.com/images/I/618UEXq+UdL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ it works well. *by D***N on 23 January 2026* works well with my solar system ### ⭐⭐⭐⭐ Räddar huvudsäkringen *by J***Y on 7 March 2026* Fungerar bra, men är lite svår att ställa in på rätt spänning. Hysteresens minsta värde , 5%, är i högsta laget ibland. ### ⭐⭐⭐ Discreto *by S***O on 13 July 2025* Che dire per il momento funziona. Peccato che e limitato nelle funzioni. ## Frequently Bought Together - GEYA Single Phase Voltage Relay Adjustable Over or Under Voltage Protection Monitor Relay 1SPDT 10A (GRV8-01,AC/DC110V-240V) - Chtaixi AC Miniature Circuit Breaker, 32 Amp 120V/240V 2 Pole DIN Rail Mount Circuit Breaker, Thermal Magnetic Trip, Solar AC Disconnect Switch MCB C32 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/496181522-geya-single-phase-voltage-relay-adjustable-over-or-under-voltage](https://www.desertcart.vn/products/496181522-geya-single-phase-voltage-relay-adjustable-over-or-under-voltage) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-07-01*