FARBIN Truck Backup Alarm 12V–48V — 110dB Reverse Horn, IP67 Waterproof

FARBIN Truck Back up Alarm is a waterproof, high-decibel reverse horn for 12V–48V heavy vehicles that alerts pedestrians and drivers with a 110±3 dB warning tone.

Designed for demanding commercial and construction environments, this FARBIN reverse alarm combines a rugged nylon housing, epoxy-sealed electronics and IP67-rated protection to withstand dust, water and wide temperature swings. It mounts broadly on trucks, vans, forklifts, RVs and construction equipment and activates automatically with reverse lights or a dedicated reverse switch.

How loud is this alarm and will it be heard in noisy work zones?

The unit emits a 110±3 dB beeping sound engineered to penetrate traffic and construction noise so nearby pedestrians and vehicle operators notice reversing activity. The high sound pressure helps reduce collision risk by providing a clear audible warning even in busy sites.

• Rated output: 110 dB ±3 dB
• Distinct repeating beeps for immediate recognition
• Effective at long range in typical outdoor and industrial settings

Will this fit my vehicle and how does it connect?

The alarm is universal across 12V to 48V electrical systems, making it compatible with most light-, medium- and heavy-duty vehicles. Installation is straightforward: wire the positive terminal to your reverse-light circuit or a dash-mounted reverse switch and attach the negative to ground.

• Voltage range: 12V–48V DC compatibility
• Universal mounting bracket with slotted holes for flexible placement
• Reverse polarity protection to prevent damage from incorrect wiring

How durable is the alarm for outdoor and construction use?

Built with a high-quality nylon shell and epoxy-embedded electronics, the alarm achieves IP67-level waterproofing and dust resistance. It’s rated to operate reliably in temperatures from -30 °C to 80 °C, suitable for harsh weather and dirty jobsite conditions.

• IP67 waterproof and dustproof housing
• Epoxy-embedded internal electronics for moisture protection
• Temperature tolerance: -30 °C to 80 °C

What should I expect during installation and maintenance?

Installation requires simple wire splicing to the reverse light or switch and a secure mount using the included bracket. The design minimizes maintenance: sealed electronics resist water and debris, and reverse polarity protection reduces risk during wiring.

• Mount with included universal bracket and slotted holes
• Wire positive to reverse light or switch, negative to ground
• Minimal upkeep due to sealed construction

Who is this for: FARBIN’s Truck Back up Alarm is aimed at fleet operators, construction contractors, tradespeople and owners of trucks, buses, RVs, forklifts and other large vehicles who need a durable, high-volume reversing alert. It’s also suitable for vehicle refits, safety upgrades and situations where a reliable, weatherproof audible warning improves onsite safety and visibility.

If you need assistance selecting the right mounting location or wiring method for your vehicle, consult a qualified technician or contact FARBIN customer support for guidance before installation.