1pcs motor speed controller & 1pcs Step Up-Boost adapter: color: green & green-silver, Material: electrical parts, plastic & metalThis Brand New 1803B DC Motor Speed Controller allows controlling the direction of a DC the motorusing a Pulse-Width-Modulated (PWM) DC voltage with a Duty Cycle fully the product adjust from 0%-100%.With a self-recovery fuse 2A and a Power-On LED light.Enable to provide a continuous current of 2A to your DC motor or other DC load.DIY a mobile power supply, you only need a battery, you can output 5-28 V for your mobile phone, MP3, MP4, very easy.in order to recharge electronic devices when the device needs 2-24V power supply, when it has - Lithium battery, this module can be directly step, up to 5-28V, solve problems.Input supply voltage: 1.8V-15VDCThe max output power: 30WThe max continuous output current:2ADuty Cycle adjustable: 0%-100%Product name: Step Up Boost Module adapterInput voltage: DC 2-24Output: DC 5-28 V, current Max: 2AFit connection: USB 2.0,printed circuit board Dimensions: 37 x 17 mm, 3.81 cm x 1.70 (0.67 (1.5 cm (L x L)color: green & green-silverMaterial: electrical parts, plastic & metalmotor speed controller Size: 32 x 32 x 15mmPackage contents: 1 x motor speed controller1 x Step Up-Boost adapterOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.