125dB super loud, clear and striking, can't be ignored, a powerful warning. Sound Level: 125dB. Includes a stainless steel adjustable trumpet support to prevent vibration. It can be mounted on application that has a 12V DC power available, like trucks, boats, etc.
eBay
Remote Control Steam Whistle 5V Sound Module Mini Siren Unit Simulation Hooter Horn Kit for RC Boat Model DIY Ship Parts
Aliexpress UK
Horn Type: Electric. Low & High Tone. Engineered for exterior use in almost any weather condition including fresh or salt water. 1X speaker (double tube). We believe that variety is the spice of life.
eBay
37mm 23T 24T 25T Metal Servo Arm Extension Servo Horn For 1/10 RC Crawler Car Boat Futaba HSP Wltoys Axial SCX10 Parts
Aliexpress UK
Multi-tone & Claxon Horns. 12V Polished Stainless Steel Single Trumpet Horn Low Tone for Marine Boat Truck Lorry Caravan RV. Material: stainless steel. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.
eBay
RC Diesel Engine Simulation Sound Board 5-8.4V Input 2W Horn Speaker For RC Car Boat Plane DIY Model
Aliexpress UK
Horn Type: Electric. Low & High Tone. Engineered for exterior use in almost any weather condition including fresh or salt water. 1X speaker (double tube). Otherwise deal is final. All products are quality checked.
eBay
25T Metal Double Hole 25T Servo Arm Horn For 1/10 RC Car Boat Futaba Savox Emax PowerHD JX SPT HSP Wltoys Axial SCX10 Parts
Aliexpress UK
Motorcycle & Scooter Horns & Horn Covers. 1 x 12V Air Horn. This air horn will be a perfect choice for boats, RV's, SUV's and trucks, and the volumn is loud. Item Type: Air Horn. Power Source: 12V. Boat Horns .
eBay
25T M3 Aluminum RC Servo Arm Horn Single Arm/Dual Arm for For 1/10 RC Crawler Car Boat Futaba HSP Wltoys Axial SCX10 Parts
Aliexpress UK
125dB super loud, clear and striking, can't be ignored, a powerful warning. Sound Level: 125dB. Includes a stainless steel adjustable trumpet support to prevent vibration. It can be mounted on application that has a 12V DC power available, like trucks, boats, etc.
eBay
25T M2.5 RC Servo Metal Horn Aluminium Arm for RC Car Boat Robot Wltoys 12428 MN78 MN82 MN168 MN99S WPL D12 B36 C54 C74 DIY Toy
Aliexpress UK
125dB super loud, clear and striking, can't be ignored, a powerful warning. Sound Level: 125dB. Includes a stainless steel adjustable trumpet support to prevent vibration. It can be mounted on application that has a 12V DC power available, like trucks, boats, etc.
eBay
RC Diesel Engine Simulation Sound Module 5-8.4V Input 2W Small Horn Speaker For Remote Control Car Boat Airplane DIY Model
Aliexpress UK
125dB super loud, clear and striking, can't be ignored, a powerful warning. Sound Level: 125dB. Includes a stainless steel adjustable trumpet support to prevent vibration. It can be mounted on application that has a 12V DC power available, like trucks, boats, etc.
eBay
DC 5-12V Micro Sound Module 3S Horn Simulation Marine Speaker Steam-Whistle Siren Trumpet Control Nautical Part for RC Boat
Aliexpress UK