---
product_id: 494766454
title: "LP81 Smart Relay with Switch Sense Input, 700W, On/Off, Volt-Free - Works with Alexa, Google Assistant, HomeKit, iOS & Android Compatible"
brand: "lightwave"
price: "€ 170.69"
currency: EUR
in_stock: true
url: https://www.desertcart.be/products/494766454-lp81-smart-relay-with-switch-sense-input-700w-on-off
store_origin: BE
region: Belgium
---

# 700W max load power Works with Alexa, Google, HomeKit Volt-free on/off switching LP81 Smart Relay with Switch Sense Input, 700W, On/Off, Volt-Free - Works with Alexa, Google Assistant, HomeKit, iOS & Android Compatible

**Brand:** lightwave
**Price:** € 170.69
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your smart home with invisible intelligence!

## Quick Answers

- **What is this?** LP81 Smart Relay with Switch Sense Input, 700W, On/Off, Volt-Free - Works with Alexa, Google Assistant, HomeKit, iOS & Android Compatible by lightwave
- **How much does it cost?** € 170.69 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/494766454-lp81-smart-relay-with-switch-sense-input-700w-on-off)

## Best For

- lightwave enthusiasts

## Why This Product

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

## Key Features

- • **Switch Sense Input:** Trigger automations from any standard or push button switch—no need to replace existing switches.
- • **High Power Handling:** Supports up to 700W, perfect for lighting and small appliances without compromise.
- • **Future-Proof Automation:** Volt-free relay ensures safe, flexible installation with third-party smart systems.
- • **Compact & Discreet Design:** Small 5.3 x 2.7 x 6.8 cm form factor fits neatly behind your wall switch.
- • **Seamless Smart Integration:** Effortlessly control your home with Alexa, Google Assistant, and Apple HomeKit compatibility.

## Overview

The Lightwave LP81 Smart Relay is a compact, 700W-capable device that enables smart on/off control via volt-free switching. Compatible with Alexa, Google Assistant, and Apple HomeKit, it supports existing switches through its Switch Sense Input, allowing seamless integration into any smart home setup without rewiring. Ideal for professionals seeking discreet, powerful automation solutions.

## Description

LP81 Smart Relay with Switch Sense Input, 700W, On/Off, Volt-Free - Works with Alexa, Google Assistant, HomeKit, iOS & Android Compatible

## Features

- Switch Sense Input allows you to trigger Lightwave and third-party automations from these non-smart devices; standard light switch (Toggle Mode in the app), push button switch (Retractive Mode in the app), pull-cord switch in bathrooms
- Green
- Home Improvement
- Lightwave

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Lightwave RF |
| Part Number | LP81 |
| Product Dimensions | 5.3 x 2.7 x 6.8 cm; 154 g |
| Item model number | LP81 |
| Colour | Green |
| Finish | Glossy |
| Material | Plastic, Metal |
| Shape | Circular |
| Power Source | AC |
| Voltage | 230 Volts |
| Wattage | 700 watts |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Plug profile | Wall Mount |
| Usage | Smart Home, Home Automation, Smart Power, Smart Lighting, Smart Security |
| Included Components | Lightwave Smart Relay with Switch Sense Input, Instruction Guide |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 154 g |

## Images

![LP81 Smart Relay with Switch Sense Input, 700W, On/Off, Volt-Free - Works with Alexa, Google Assistant, HomeKit, iOS & Android Compatible - Image 1](https://m.media-amazon.com/images/I/31YrmBGOFCL.jpg)

## Frequently Bought Together

- Lightwave LP81 Smart Relay with Switch Sense Input, 700W, On/Off, Volt-Free - Works with Alexa, Google Assistant, HomeKit, iOS & Android Compatible
- Lightwave LP24WHMK2 Smart Dimmer with Energy Monitoring, 4 Gang, White Metal - Works with Alexa, Google Assistant, HomeKit. iOS & Android Compatible
- Lightwave LP83 Smart Relay, 3 Gang, 3500W - Works with Alexa, Google Assistant, HomeKit, iOS & Android Compatible

---

## 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.be/products/494766454-lp81-smart-relay-with-switch-sense-input-700w-on-off](https://www.desertcart.be/products/494766454-lp81-smart-relay-with-switch-sense-input-700w-on-off)

---

*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-04-22*