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5Pcs 3144E Hall Effect Sensor Module Effect Sensor Switch 3.3v Speed Counting Sensors Magnetic Detector Counting Sensor — Open-Box, 16% Off
Brand: Walfront
Condition: Used - Mint
$885
$1051
-16% Save $166
Updated: 31 days ago
Description
Binary Field Detection: Detects magnetic field presence with clear digital output (LOW signal when triggered). LED illuminates for visual confirmation
Stable 3144E Sensor: Uses switch-type 3144E Hall sensor ensuring consistent performance and good temperature stability
Compact & Reliable: Small-sized module enables easy integration. Designed for dependable ON/OFF magnetic sensing operation
Dual Status Indicators: Includes power-on light and signal LED (lights when magnetic presence detected) for immediate monitoring. Note: Output indicates presence only, not field strength
Simple Digital Output: DO pin provides LOW (0V) or HIGH voltage; AO pin outputs binary analog (0 or 4095 value). Ideal for presence/non-presence applications
Specification:
Condition: Brand New
Work Voltage: 3.3-5V
Package List:
5 * Effect Sensor Switch
Wiring instructions:
1. VCC -power positive
2. GND -power supply negative
3. DO -TTL digital output
4. AO -analog output (different distance output, different voltage)
Note:
New- and old- are shipped randomly
Condition: Brand New
Work Voltage: 3.3-5V
Package List:
5 * Effect Sensor Switch
Wiring instructions:
1. VCC -power positive
2. GND -power supply negative
3. DO -TTL digital output
4. AO -analog output (different distance output, different voltage)
Note:
New- and old- are shipped randomly
Sold by
Amazon Warehouse
Official Amazon outlet for open-box & returned items
- Backed by Amazon's A-to-Z Guarantee
- 30-day return policy
- Ships from Amazon fulfillment centers
- Price verified on Amazon
Product Details
- SKU:
- awhd-us-b0bk9zmwsv
- Model:
- Walfront Generic
- Country:
- US
- ASIN:
- B0BK9ZMWSV
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Common questions about buying open-box and refurbished.
Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $2 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
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