Matek 3 in 1 Battery Monitor, Signal Loss Alarm & Discovery Buzzer
£7.99 Inc. VAT
This device monitors battery voltage, detects RC signal loss & provides a lost model discovery buzzer.
In stock|Next shipping: 16/03/2026
The 3-In-1 Battery Monitor, Signal Loss and Lost Airplane Alarm is a handy little device that will help protect your valuable investment. First, it acts as a battery voltage monitor. Once voltage gets below the threshold you set, the alarms will go off and a red LED will illuminate. Additionally it can detect if signal is lost to your receiver, and just like the voltage monitoring feature, the alarms will go off. The last feature is the lost model alarm which operates when plugged into an auxiliary channel on your receiver, such as the retract switch. A lost model alarm is great if you crash your model into tall grass or trees and are not really sure where it went down. Taking up a small footprint of space, this little device will fit in most models. The simple features it adds for the relatively low cost and negligible weight will give you peace of mind when flying your model.
Features:
- Battery monitor checks your battery voltage and visibly and audibly warns you when battery is too low
- Remote on/off alarm works as a lost airplane finder
- Signal loss alarm automatically alerts you if it detects loss of radio signal
- Light weight, low cost peace of mind
- Working voltage: 5.2~26V DC, 2-6Cells LiPo
- Standby current less than 10mA
- Working current, Max 120mA (blinking & beeping)
- Voltage threshold setting: 3.4~3.7V/cell (Red LED)
- Twin loud buzzers, 85db each
- Ultrahigh Brightness LED, 20lm, 0.2w, Blue
- Size: 20x30x6mm,
- Weight: 7g
Includes:
- 1x 3 in 1 Battery Monitor, Signal Loss Alarm & Discovery Buzzer
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SHIPPING & DELIVERY
We are based in the UK and ship to most destinations worldwide.
We dispatch orders during the times shown on our Dispatch Schedule. Orders placed before the daily dispatch cutoff will ship the same day (subject to stock availability). Orders placed after the cutoff will ship on the next scheduled dispatch day.
A confirmation email is sent once your order has been packed. If you need to amend your order, please contact us as soon as possible — once shipped, we’re unable to make changes.
We work with trusted delivery partners including Royal Mail, DHL, UPS, Fedex and Parcelforce. If you have a delivery requirement or would like to arrange collection, please get in touch.
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Shipping to the UK
- Order before the daily dispatch cutoff for same day dispatch.
- FREE delivery available on qualifying orders over £99 (under 1kg).
For small, low-value orders, Royal Mail First Class is our most economical option. Royal Mail Tracked 24 is the most popular choice, offering full tracking and flexible delivery options. For guaranteed next working day delivery, we recommend Royal Mail Special Delivery.
Royal Mail delivers to residential addresses Monday to Saturday, while courier services (including DHL) typically deliver Monday to Friday.
International Postage
- USA orders: Import duties and taxes are prepaid by us — no additional customs charges on delivery.
- Other destinations: Customs duties or import taxes may apply and are the responsibility of the recipient.
Smaller, lower-value orders may be sent via Airmail or tracked postal services. Economy road and express air courier options are available depending on destination. For faster delivery, we recommend express air courier services such as DHL Express, which typically deliver within 1–2 working days across Europe and a few working days for most other destinations.
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