Siren Market Value
Analysis of 405 eBay listings for sirens and alarm systems.
What you'll usually pay
💡 Buying used saves about 35% here.
👉 In short easy summary
The best value is found in standard sirens and wall-mounted units, which trade below the market median. Premium pricing is driven by battery backup and Wi-Fi features, both showing a 142% increase over the median.
💚 Best value for your money
Price by features
Why? Prices range from 14 for outdoor units to 48.44 for Wi-Fi and flash strobe models.
Price by type
Why? Panic alarm sirens are the lowest at 12.34, while keypads reach 53.3.
Price by brand
Why? ADEMCO is the most affordable at 11, whereas SECO-LARM is the most expensive at 63.18.
🛒 Some on sale right now
Common questions
What is the price difference between new and used sirens?
The median price for new sirens is 20, while used sirens have a median of 13.05.
Which brand offers the lowest median price?
ADEMCO has the lowest median price at 11.
How much more do battery backup sirens cost compared to the median?
Battery backup sirens have a median price of 48.43, which is a 142% increase over the market median.
How we got these numbers
Worked out from 200 live eBay listings (price range $10–$72, odd outliers ignored). These are asking prices, so use them as a guide. Last checked July 26, 2026.