Lightwave Smart Relay With Switch Sense Input

4 In Stock | More Available In Usually 3-5 days
View Stock Locations
Special price until
£69.95 Incl. VAT
Per Each

Smart Relay With Switch Sense Input Lightwave

  • Features

    The Smart Relay With Switch Sense Input by Lightwave represents a revolutionary step in home automation, designed to bridge the gap between traditional non-smart devices and modern smart home systems.

    This innovative product enables users to incorporate standard light switches, push-button switches, pull-cord switches, and various sensors (such as smoke, heat, and motion sensors) into their Lightwave ecosystem, facilitating seamless integration with third-party automations.

    Its compatibility with major voice-control platforms like Amazon Alexa, Google Assistant, and Siri through Apple HomeKit enhances user convenience, allowing for effortless voice commands.

    Furthermore, the Smart Relay functions as a robust on/off relay for non-dimmable loads up to 700W, suitable for 6 amp circuits, and offers versatility in wiring, including mains powered or volts free circuits, with the capability to source mains power directly from the Relay.

    Lightwave LP81 is a Smart Relay that demands a Link Plus and internet connection for app or voice control, emphasising its role in a connected, intelligent home environment. Whether looking to upgrade existing installations or embark on new smart home projects, the Lightwave Smart Relay With Switch Sense Input offers an exceptional solution for enhancing home automation and connectivity.

    Key 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
    • The following devices must have a switched line out:
      - Smoke detector
      - Heat sensor
      - Wired motion sensor
      - Legacy control systems
      - Diverter valve position
    • Voice-control compatibility with Amazon Alexa, Google Assistant & Siri through the Apple HomeKit platform.*
    • Smart Relay works as a normal On/Off relay for non-dimmable loads up to 700W, suitable for 6 amp circuit.
    • The switched circuit can be mains powered or volts free (low voltage). Mains power can also be taken from the Relay itself to power the circuit (see wiring instructions for more information).
    • Switch Sense Input in mains referenced and must be treated as mains voltage at all times.
      - *Link Plus and Internet connection required for app/voice control.
    • Product code: LP81
    • Manufacturer: Lightwave
  • Specifications & Dimensions
    SKU LP81
    Brand Lightwave
    Product Type Relay
    GTiN 5060252203333
    Dimensions Located Below Specifications Table
    Dimmable No
    Finish Green
    Series Lightwave Smart Series
    Voltage 230V AC
    Wattage 700 W
    Warranty 3 Years
    • Height: 52mm
    • Width: 68mm
  • Reviews
  • Product Questions & Answers

    Product Questions & Answers

    No questions yet. Be the first to ask the question!
  • Data Sheets & Brochures
    Product Attachments
    Data Sheet Data Sheet
    Instruction Sheet Instruction Sheet

Free Delivery

Applies to orders over £50 excluding VAT. If the order is below £50 a delivery charge of £5 +VAT will be added for a 1-3 day tracked service.

Guaranteed next working day deliveries are available from £7 +VAT and free for orders over £150 +VAT, depending on the warehouse location. See delivery zones below for Scottish Highlands and International shipping zones. This applies to orders up to 30kg in weight.

Click & Collect

You can collect your order from our warehouse which is located at Unit 4A Buckley Rd Ind Est, Buckley Road, Rochdale, OL12 9EF.

Our warehouse opening hours are:

  • Monday to Thursday: 8AM - 5PM
  • Friday: 8AM to 4PM
  • Saturday: 9AM to 12PM

Courier & Tracking

We use  DPD Local for all of our deliveries apart from heavier palleted goods. If you insert your mobile number at checkout, you will receive a text message to confirm your delivery date the day before the delivery. On the delivery day you'll receive further text updates including a 1 hour delivery slot. If you're not available you can arrange a different date or alternative drop-off point with DPD. Tracking information and order updates will also be available in your customer order area.


DPD Local provide a contact-free delivery service. Our warehouse and delivery network will remain open. This includes lock downs.

Export Information & Brexit

We're proud to offer a worldwide delivery service to any location in the known universe. Simply input your delivery details in the checkout and the shipping costs and relevant taxes will be calculated. A breakdown of delivery costs and zones can also be located below.

Delivery Zones

Zone 0

Standard UK mainland areas. Free delivery on orders over £50 excluding VAT.

Zone 1 UK

Charged at £7 excluding VAT and free on orders over £150 excluding VAT. Includes the following areas:

  • Channel Islands; Guernsey & Jersey (please select these from the Country list (not UK)
  • Isle of Man
  • Isle of Wight
  • Northern Ireland
  • Scottish Highlands, areas which we class as zone 1 are post codes: AB30-38, AB44-56, FK17-99, G83, IV1-28, IV30-32, IV33-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH18-26, PH30, PH31-41, PH49-50
  • Scottish Islands: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA30, PA32-34, PA41-49, PA60-78, PH42-44, ZE1-3

Zone 1 EU - Same rates as Zone UK

  • Republic of Ireland

Zone 2

Charged at £12. Includes the following areas:

  • Austria
  • Belgium
  • Denmark
  • France
  • Germany
  • Luxembourg
  • Netherlands

Zone 3

Charged at £25. Includes the following areas:

  • Czech Republic
  • Italy
  • Slovakia
  • Spain

Zone 4

Charged at £30. Includes the following areas:

  • Estonia
  • Finland
  • Hungary
  • Slovenia
  • Poland
  • Portugal
  • Sweden

Zone 5

Charged at £40. Includes the following areas:

  • Bosnia
  • Bulgaria
  • Croatia
  • Greece
  • Iceland
  • Latvia
  • Lithuania
  • Romania
  • Serbia

Zone 6

Charged at £60. Includes the following areas:

  • Norway
  • Russia
  • Switzerland
  • Ukraine

Zone 7

The rest of the world is charged at £80.

Cut Off & Delivery Times

If your order is placed before 3PM Monday to Thursday and before 2PM on Friday it will usually leave on a next day delivery service. This is providing that all of the items are in stock, we have live stock data on each product on our website. If your order is particularly urgent please choose the next working day option or part shipment option were we ship the items we have in stock and send the rest when they arrive. These as a guaranteed delivery services, if your delivery doesn't arrive, we'll refund the delivery charge. We prioritise next day deliveries over standard orders and will contact you if any goes wrong with the order.

If we are out of stock of any items you will receive a notification by email. If the items are delayed by longer than a week then we will notify you of this. We can also arrange for direct shipments from some of our manufacturers, if we are out of stock and you need something urgently please contact us and we will offer the fastest delivery options.

Next day deliveries are classed as next working day and don't include weekends. We also offer Saturday AM and Saturday all day services which are available at the checkout for zone 0 addresses. A Sunday service is also available on request, or you can place a Saturday delivery and change the delivery date directly with DPD via their App after you receive your tracking information.

Returns can now be generated within the customer order area here. Simply select your order from the dropdown menu along with a reason for return. Your return will then get processed quickly and efficently. Alternatively email us at: [email protected] with your order number and reason for return and we'll send you a returns authorisation form.

Returns & Cancellations

If you’re not satisfied with your goods and would like to return them, we will accept them back at the customer's expense. All unwanted goods must be returned in 100% resalable condition and within 30 days. Resalable condition includes no markings on the wires or terminals and no damage to the packaging.

To cancel your order please contact us immediately as we process and ship most of orders immediately, we're fast!

How to Return

Please log-in to your account and follow the simple process to generate a returns request. Or email our team at: [email protected]. We recommend returning goods using a recorded delivery method.


Refunds will be issued within 14 days of receipt of goods. Refunds of delivery costs will not be issued unless the products are defective.

Shortages & Damaged Goods

Shortages and damaged goods must be notified within 48 hours preferably by email to  [email protected] or Tel: 01706 868343.