--- 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: "฿7799" currency: THB in_stock: true url: https://www.desertcart.co.th/products/496181522-geya-single-phase-voltage-relay-adjustable-over-or-under-voltage store_origin: TH region: Thailand --- # Adjustable 0.1-10s time delay 10A max current rating Ultra-compact 18mm width GEYA Single Phase Voltage Relay Adjustable Over or Under Voltage Protection Monitor Relay 1SPDT 10A (GRV8-01,AC/DC110V-240V) **Brand:** geya **Price:** ฿7799 **Availability:** ✅ In Stock ## Summary > ⚡ Protect your power, perfect your performance. ## 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?** ฿7799 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/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 - • **Robust & Certified:** CE & CB certified with 18-month guarantee, built to safeguard your critical equipment. - • **Compact & Space-Savvy:** Ultra-small 18mm width fits seamlessly on any DIN rail setup without clutter. - • **Customizable Operation:** Easily select over or under voltage mode with a simple knob for tailored safety. - • **Clear Status Visibility:** LED indicator instantly shows relay working status, keeping you informed at a glance. - • **Precision Voltage Control:** True RMS measurement ensures <1% accuracy for reliable protection. ## Overview The GEYA GRV8-01 is a compact, DIN rail-mountable single-phase voltage relay designed for precise over and under voltage protection. Featuring true RMS voltage measurement with <1% accuracy, adjustable time delay (0.1-10s), and a 10A contact rating, it ensures reliable control and safety for electrical equipment. Its ultra-small 18mm width and LED status indicator make it an efficient, user-friendly solution certified by CE and CB standards. ## 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 ## 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 | |---------------|-------| | Connector Type | Screw | | Contact Material | Silver | | Contact Type | Normally Open | | Current Rating | 10 Amps | | Mounting Type | DIN Rail Mount | | Brand | GEYA | | Operation Mode | Manual | | Wattage | 57600 Watts | | Coil Resistance | 10 Ohms | | Coil Voltage | 240 Volts | | Contact Current Rating | 10 Amps | | Maximum Switching Current | 10 Amps | | Maximum Switching Voltage | 240 Volts | | Number of Terminals | 2 | | Specification Met | Yes | | UPC | 736961740654 | | Manufacturer | ZHEJIANG GEYA ELECTRICAL CO.,LTD | | Country of Origin | USA | | Model number | GRV8-01 AD240 | | Colour | GRV8-01 | | Item Weight | 82 g | | Package Dimensions | 9.3 x 7.39 x 2.39 cm; 82 g | | Item model number | GRV8-01 AD240 | | Are batteries included? | No | ## 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) ## 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.co.th/products/496181522-geya-single-phase-voltage-relay-adjustable-over-or-under-voltage](https://www.desertcart.co.th/products/496181522-geya-single-phase-voltage-relay-adjustable-over-or-under-voltage) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-05-03*