![[Discontinued] SainSmart DC3.3-12V 2Channel 2CH Speed Detection Sensor Module Board](http://www.sainsmart.com/cdn/shop/products/03_42.jpg?v=1499266702&width=1445)
![[Discontinued] SainSmart DC3.3-12V 2Channel 2CH Speed Detection Sensor Module Board](http://www.sainsmart.com/cdn/shop/products/01_44.jpg?v=1499266702&width=1445)
![[Discontinued] SainSmart DC3.3-12V 2Channel 2CH Speed Detection Sensor Module Board](http://www.sainsmart.com/cdn/shop/products/02_40.jpg?v=1499266702&width=1445)
![[Discontinued] SainSmart DC3.3-12V 2Channel 2CH Speed Detection Sensor Module Board](http://www.sainsmart.com/cdn/shop/products/04_43.jpg?v=1499266702&width=1445)
Description:
- With output status indicator light, lower level, light on; High level, light off.
- Obscured output low, unobstructed output high
- The comparator output, the signal is clean, the waveform, driving ability, more than 15mA
- With fixed bolt hole for easy installation
- Can widely be used in dynamo speed detecting or mcu DIY project
Specification:
| Product Name | Speed Sensor Module |
| Chip | LM393 |
| Working Voltage | DC 3.3-12V |
| Channel Number | 2 |
| PCB Size | 3.1 x 1.6cm/1.2" x 0.63"(L*W) |
| Materials | PCB |
| Main Color | Blue |
| Net Weight | 4g |
| Package Content | 1 x Sound Sensor Module |