---
title: "Relay Box — $78K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/relay-box"
last_updated: "2026-08-06T22:23:41.867Z"
locale: en
meta:
description: "Niche score 45/100 · $78K/yr market · 134K searches/yr · $30.53 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · $78K/yr market · 134K searches/yr · $30.53 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Relay Box — $78K/yr Amazon US Niche (2026) - Flapen"
---
# **relay box**
**Skip it**
A small market ($78K/yr) — this niche doesn't clear our bar today.
Market size 19Growth 22Conversion 24Competition 46Returns 52Price range 95Avg price 95Brand share 37Review moat 78Quality gap 70
**Avg price**
**Incredible****$30.53**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$17.70–$62.88**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****449.56**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Returns**
**Good****2.9%**
return rate — above 5% kills the launch gate
**Competition**
**Okay****58%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****83%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Bad****1.9%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-5.6%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$78K**
$78K/yr · 134K searches
According to Flapen's Amazon United States niche tracking, relay box is a $78K/yr Amazon United States market (134K searches/yr). The top 5 brands hold 83% of demand. Verdict: Skip it — 45/100.
Data updated Jul 11, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **relay box market data**
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **$92K–$122K**
- units × avg price
- **Conversion rate**
- **1.9%**
- **Avg BSR**
- **#56**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **94%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **44 months**
- **Avg seller age**
- **169 days**
## **Competition & brand share**
The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**9 **▼falling
**Sellers**
**14**
**Top-5 brand share**
**83%**
Top 20: 100%
**Top-5 click share**
**58%**
Top 20: 100%
**Open market**
**10%**
- DAIERTEK39% - ONLINE LED STORE14% - Weasch11% - RVBOATPAT11% - FASTSTORM7% - Nilight7% - Open — no brand owns it (3 brands, 10%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -5.6% search growth over the last 90 days.
3K2K seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.2×
[**Open Trend **](https://flapen.com/research/us/automotive/relay-box/trend)
## **Top relay box search terms**
- **relay box**57K/yr-0.9%1.9% conv. - **fuse relay box**12K/yr+5.7%1.7% conv. - **relay fuse box**9K/yr-6.8%1.7% conv. - **fuse and relay box**9K/yr-6.8%1.6% conv. - **relay block**9K/yr-13.2%2.4% conv. - **12v relay box**10K/yr-23.3%3.0% conv. - **relay panel**6K/yr-5.1%1.9% conv. - **waterproof relay box**5K/yr-12.2%0.9% conv. - **automotive relay box**6K/yr-2.2%2.2% conv. - **relay box 12v automotive**5K/yr-8.4%2.5% conv. [**All search terms **](https://flapen.com/research/us/automotive/relay-box/search-terms)
## **Top relay box products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$8K20%$16K30%$23K40%$31K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**DaierTek 12V Relay Box 6 Way12 AWG Pre-Wired Waterproof Relay Box 6 Slot ATC/ATO Fuse Relay Block Universal Relay Panel for Automotive Car Marine Boat**DAIERTEK**$25.82**4.5★505 rev](https://www.amazon.com/dp/B0CP56SXNT) [2![True Mods Waterproof 12V Fuse Relay Box Block Kit w/Pre-Wired Harness [12 & 16AWG] 6 Gang Bosch Style 5Pin 30A/40A Universal Relay & Fuse Panel for DC Auto Automotive Vehicle Car Marine Boat Jeep UTV](https://m.media-amazon.com/images/I/51nb8T58EdL.jpg)**True Mods Waterproof 12V Fuse Relay Box Block Kit w/Pre-Wired Harness \[12 & 16AWG\] 6 Gang Bosch Style 5Pin 30A/40A Universal Relay & Fuse Panel for DC Auto Automotive Vehicle Car Marine Boat Jeep UTV**ONLINE LED STORE**$48.50**4.5★254 rev](https://www.amazon.com/dp/B0CDZCKBWM) [3**Weasch 12V 6 Way Pre-Wired Fuse Relay Box Kit with Two 80A 4-Pin Relays**Weasch**$17.70**4.4★185 rev](https://www.amazon.com/dp/B0DDWYT8JL) [4**FASTSTORM Fuse Relay Box Relay Block Box Built-in Diodes 6 Way 12 AWG Pre-Wired Waterproof Relay Panel with Relays and Terminals ATC/ATO Fuses Automotive Relay Box 12V for Automotive Car Marine Boat**FASTSTORM**$25.56**4.4★36 rev](https://www.amazon.com/dp/B0FT7MJPZ3) [5**RVBOATPAT 12V Fuse Relay Box 6 Way Relay Fuse Box Pre-Wired Waterproof Relays Box with 6 Relays and 12 ATC/ATO Fuses Relay Panel for Automotive Car Marine Boat**RVBOATPAT**$26.50**4.6★325 rev](https://www.amazon.com/dp/B0DBG1BVL8)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**DaierTek 12V 3 Way Waterproof Relay Box Pre-Wired Fuse and Relay Box 3x4 Pin 40A Relay and 3 ATC/ATO Blade Fuse for Automotive Cars Truck Boat Upgrade**DAIERTEK**$29.11**15 rev9mo ago](https://www.amazon.com/dp/B0FV7V4QGX) [**DaierTek 12V Fuse Box and Relay Block 8 Relay 12 ATC/ATO Blade Fuse Pre-Wired Panel Dustproof Pre-Wired Fuse Relay Box for Automotive Car Marine Boat**DAIERTEK**$55.99**132 rev9mo ago](https://www.amazon.com/dp/B0FV7H8F6Y) [**FASTSTORM Fuse Relay Box Relay Block Box Built-in Diodes 6 Way 12 AWG Pre-Wired Waterproof Relay Panel with Relays and Terminals ATC/ATO Fuses Automotive Relay Box 12V for Automotive Car Marine Boat**FASTSTORM**$25.56**36 rev9mo ago](https://www.amazon.com/dp/B0FT7MJPZ3) [**Weasch 12V 6 Way Pre-Wired Fuse Relay Box Kit with 4 x 40A 4-Pin Relays**Weasch**$25.89**37 rev1y ago](https://www.amazon.com/dp/B0F4KCS43B) [**DaierTek Relay Box 12V 10 Way Relay Block and 10 Way ATC/ATO Blade Fuse Panel Pre-Wired Dustproof Fuse Relay Box for Automotive Car Marine Boat**DAIERTEK**$62.88**132 rev1y ago](https://www.amazon.com/dp/B0DR5M57RH)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**DaierTek 12V Fuse Box and Relay Block 8 Relay 12 ATC/ATO Blade Fuse Pre-Wired Panel Dustproof Pre-Wired Fuse Relay Box for Automotive Car Marine Boat**DAIERTEK**$55.99**4.1★**▲ 130%**](https://www.amazon.com/dp/B0FV7H8F6Y) [**FASTSTORM Fuse Relay Box Relay Block Box Built-in Diodes 6 Way 12 AWG Pre-Wired Waterproof Relay Panel with Relays and Terminals ATC/ATO Fuses Automotive Relay Box 12V for Automotive Car Marine Boat**FASTSTORM**$25.56**4.4★**▲ 129%**](https://www.amazon.com/dp/B0FT7MJPZ3) [**DaierTek 12V 3 Way Waterproof Relay Box Pre-Wired Fuse and Relay Box 3x4 Pin 40A Relay and 3 ATC/ATO Blade Fuse for Automotive Cars Truck Boat Upgrade**DAIERTEK**$29.11**3.8★**▲ 77%**](https://www.amazon.com/dp/B0FV7V4QGX) [**DaierTek 12V Relay Box 6 Slots Fuse Relay Block 6 Slots ATC/ATO Fuse and Relay Block with Relay Universal Fuse and Relay Box Kit for Truck Marine Boat**DAIERTEK**$17.98**4.3★**▲ 60%**](https://www.amazon.com/dp/B09ZL19PQ8) [**Weasch 12V 6 Way Pre-Wired Fuse Relay Box Kit with Two 80A 4-Pin Relays**Weasch**$17.70**4.4★**▲ 38%**](https://www.amazon.com/dp/B0DDWYT8JL)
**~~View all trending →~~**
## **What buyers say about relay box**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**25%
*“Excellent quality product”*
**Assembly/Installation**11%
*“Easy to install”*
**Value For Money**7%
*“Decent for the price”*
**Design-Overall**6%
*“design is good”*
**Advertised Vs Actual Product**6%
*“Works as advertised”*
**Efficiency**5%
*“Works perfectly”*
**Ease Of Use**5%
*“It saves a lot of time”*
**Water Resistance**4%
*“The box is waterproof”*
**Ease Of Cleaning**2%
*“Super clean”*
**Mounting**2%
*“much easier than mounting discrete componenets”*
### **What buyers complain about **
**Instructions/User Manual/Troubleshooting**14%
*“No Instructions”*
**Quality-Overall**12%
*“Quality control is poor”*
**Functionality-Overall**6%
*“Didn't work”*
**Water Resistance**5%
*“NOT WATERPROOF”*
**Value For Money**5%
*“Cheap wasn't even worth the cost”*
**Durability**5%
*“LID will break almost immediately”*
**Size-Overall**3%
*“are so small”*
**Strength**3%
*“The plastic snap covers are brittle”*
**Material Quality**3%
*“Very cheap plastic”*
**Defective Material/Parts**3%
*“Bad parts”*
### **Top return reasons **
**Size-Overall**34%
**Functionality-Overall**12%
**Compatibility-Overall**12%
**Defective Material/Parts**9%
**Mounting**8%
**Advertised Vs Actual Product**6%
**Water Resistance**3%
**Assembly/Installation**3%
**Instructions/User Manual/Troubleshooting**2%
**Value For Money**2%
## **Common questions**
- **Is relay box profitable to sell on Amazon United States?**
- The niche generates $78K/yr across 18 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -5.6%. Flapen's verdict: Skip it (45/100).
- **How competitive is the relay box niche?**
- 9 brands and 14 sellers compete. The top 5 products take 58% of clicks and top 5 brands hold 83% of demand.
- **What do buyers complain about in relay box?**
- Top complaints mined from reviews: Instructions/User Manual/Troubleshooting, Quality-Overall, Functionality-Overall. The return rate is 2.9%.
- **When does demand for relay box peak?**
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- **What does it cost to enter the relay box niche?**
- Listings span $17.70–$62.88; the average listing price is $30.53 (sweet spot $15–$100). The average incumbent carries 450 reviews — the moat a new listing must climb.
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