Brand KEYES Model N/A Quantity 1 Color Silver + red Material RF4 Features Works official Arduino products with fool-proofing interface and tailored wire. Specification Voltage: 3.3V or 5V; Current: <20mA; Output voltage: 0~2.3V (2.3V for when it is soaked in water); Analog output; Plug definition: plug 1 is signal plug 2 is GND plug 3 is +; About 1 year service time; Gold plated surface for better conductivity and corrosion resistance. Application Microcontroller development English Manual/Spec http://m5.img.dxcdn.com/CDDriver/CD/sku.225594.doc Packing List 1 x Sensor 1 x Connecting cable (20cm)