Seeed 101020063 Grove - Sound Sensor Based on LM2904 3.5-10V Input

Seeed Grove - Physical Sensor Modules - Seeed Studio 101020063, The Grove Sound Sensor from Seeed Studio measures the ambient sound level and outputs it via single analogue line to any microcontroller with a spare ADC input and matching supply voltage. Seeed 101020063 Grove - Sound Sensor Based on LM2904 3.5-10V Input

Price: 1.69 from Rapid Online Rapid Electronics Ltd.