Firduo IP68 Waterproof Receiver Enclosure | PWM & UART for eFoil SUP

💧 Keep Your Receiver Dry. Every Ride.

The Firduo IP68 Waterproof Receiver Box is a compact, fully sealed enclosure designed to protect PWM and UART RC receivers in wet and submersion-prone environments. Combining a PC V0 flame-retardant housing, silicone sealing ring, stainless steel screws, and a pre-installed FD05-5A IP68 waterproof connector, it provides a complete waterproof solution for eFoil remote receivers, ROV control modules, and marine RC applications.

Available in two variants: PWM (3-pin + Dupont 2.54-3P pigtail) and UART (4-pin + PH2.0-8P-4P pigtail) — pre-wired to match your receiver protocol.

⚡ Key Features

• ✅ IP68 Waterproof Rating — fully sealed for continuous underwater submersion
• ✅ Two Variants: PWM (3-core, Dupont 2.54-3P) and UART (4-core, PH2.0-8P-4P)
• ✅ PC V0 Flame-Retardant Body — UL94 V0 rated, impact-resistant polycarbonate
• ✅ FD05-5A IP68 Connector Pre-Installed — gold-plated T2J copper, 380V, 500-cycle life
• ✅ Silicone Sealing Ring — compression seal on lid
• ✅ Stainless Steel Screws — corrosion-resistant for salt water use
• ✅ Compact: 93×52.8×41mm external; fits most standard RC receivers
• ✅ Temperature Range: -10–80°C

📋 Full Specifications

Waterproof Box

FD05-5A Connector (pre-installed)

📦 What's in the Box

• Used for PWM: 1× IP68 box + 1× 3-core connector + 1× Dupont 2.54-3P pigtail
• Used for UART: 1× IP68 box + 1× 4-core connector + 1× PH2.0-8P-4P pigtail

RC receiver and external signal cable not included.

🔗 Compatible Builds & Recommended Pairings

• eFoil — PWM: protects PPM/PWM receiver inside board; Dupont 3P pigtail connects to receiver PPM output
• eFoil — UART: protects UART receiver; PH2.0-4P pigtail connects to VESC UART for full VX3 telemetry
• ROV / AUV: IP68 enclosure for control receiver in continuous submersion
• Marine / Boat: waterproof receiver housing for RC boat and USV systems
• Pair with: Firduo VX3 IP67 Remote — VX3 receiver fits inside; use UART for full telemetry
• Pair with: Firduo FD05-5A Connector (standalone) — for additional signal penetrations
• Pair with: Firduo FD05 24A Connector — for phase/power connections in the same build

🛠️ Setup Guide

1. Select variant — PWM for PPM/PWM ESCs (3-wire: GND+VCC+signal); UART for VESC-based ESCs (enables VX3 telemetry). Check your ESC manual if unsure.
2. Install receiver — Remove screws, open box. Place receiver in cavity (64.2×33×33mm). Connect Dupont 2.54-3P (PWM) or PH2.0-4P (UART) pigtail. Ensure no wires pinch the lid seal.
3. Route external cable — Connect ESC signal cable to the external FD05-5A plug. Cable OD must be 4–6.5mm for seal to grip.
4. Seal the box — Verify silicone ring sits flat in lid groove. Close lid, tighten screws in cross pattern. Do not over-tighten.
5. Mate connector — Align plug and socket, push together, rotate nut clockwise until firm.
6. Mount box — Secure inside board away from ESC/motor heat. Ensure connector is accessible for disconnection.
7. Test before sealing board — Verify receiver binding and throttle response. For eFoil/ROV, submerge sealed box 30 min to confirm IP68 integrity.

❓ FAQ

Q1: PWM vs UART — which to choose?
PWM (3-core, Dupont 2.54-3P) for standard PPM/PWM receivers — basic throttle control. UART (4-core, PH2.0-8P-4P) for VESC ESCs — enables VX3 telemetry (voltage, current, temperature). Use UART with FD75200 VESC + VX3 remote for best experience.

Q2: Will my receiver fit?
Internal cavity is 64.2×33×33mm. Most compact RC receivers fit. Measure before ordering — receiver must fit without forcing the lid.

Q3: Does IP68 hold after repeated opening?
Yes, if the silicone ring is undamaged and correctly seated each time. Inspect ring before each re-seal. Replace if worn or if box no longer seals flush.

Q4: Salt water / marine use?
Yes. PC body, stainless screws, and gold-plated contacts are corrosion-resistant. Rinse with fresh water after salt water use and inspect periodically.

Q5: Sealed box but losing signal?
PC is RF-transparent and should not block 2.4GHz. Check: (1) antenna not coiled against metal; (2) route antenna along box wall; (3) if inside carbon fiber/metal board, reposition box closer to surface or use antenna extension.