Back-up beeper / alarm | 12-80V | Marco 104 080 25

19.75 Price ex.Vat

In stock (can be backordered)

03 - 05 units | Per unit: 18.76
06 - 10 units | Per unit: 15.80
11 - 99 units | Per unit: 14.81


Marco 104 080 25, BK90

Back-up alarm for vehicles. Universal voltage 12/80V.

Listen Back-up beeper / alarm



  • Multitension
  • Intermittent sound

Technical data:

  • Voltage (V): 12V – 80V
  • SPL @ 1 Meter: 91 dB
  • Buzzer Frequency:  3000 +/- 500 Hz
  • Operating temperature: -20°C + 60°C
  • Current consumption: 30 mA
  • Pulse rate: 1 Hz +/- 30%
  • Weight 0,04 kg
  • Hz: 3200
  • dB(A)- (2m): 85
  • Reference: Marco 104 080 25
  • Type: BK90
  • Code, International Protection Marking: IP 44
    Solid particle protection > 1mm
    Most wires, slender screws, large ants etc.
    Liquid ingress protection
    Splashing of water: Water splashing against the enclosure from any direction shall have no harmful effect, utilizing either: an oscillating fixture or a spray nozzle with no shield.


Connect the terminals of the BK90 with the battery as shown into the wiring diagram.
Steps to fix the BK90 onto the vehicle:

  1. Drill an 8,5 mm diameter hole into the supporting surface of the BK90.
  2. Fix the BK90 with a M8 screw, a washer and a M8 nut.

Please note.
Mount the BK90 in a dry area, away from squirts of water.

Wiring Diagram

Back-up beeper / alarm | 12-80V | Wiring Diagram, Marco 104 080 25, BK90



Back-up beeper / alarm | 12-80V | Dimensions, Marco 104 080 25, BK90 Back-up beeper / alarm | 12-80V | Dimensions, Marco 104 080 25, BK90


MARCO manufacture electric and air horns for cars, trucks and boats, as well as electric pumps for the transfer of various liquids.

These products are manufactured using the most advanced production equipment, such as spectrum analysers, vibrating stands, and other sophisticated instrumentation, including an anechoic chamber, for the development and testing of products.

Today the use of advanced technology enables MARCO to reach the highest International Quality Standards, allowing the creation of highly competitive products that are exported daily to over 80 countries.

Delivery Services

We have a number of Home Delivery services available to you. Availability of these options will be shown at checkout.

International Delivery

We offer delivery to European and many international destinations. For European countries, prices start from €5.00 and are calculated at the checkout page. Click here for a price guide.
For non-European countries, please select your parts and check out normally selecting your country.


At we hope that you are happy with your purchase, however we know that sometimes you will need to return or cancel an item. Any products returned must be in a re-saleable condition & include the original packing and documentation.

  • Quickparts must be informed of any return requests within 30 days of the original order date.
  • Before returning any goods please read our Terms and Conditions

You’ll find returns information on your delivery note. Unless faulty, we’d like you to make your return within 90 days of purchase. Exceptions apply to certain products – find out more about our refund policy.


Additional information

Weight 0.40 kg
Dimensions 40 × 30 × 15 cm