High-concerned chemical: NoneType: Modular AdaptersCPU: RockChip RV1106G3Core: Single core ARM Cortex-A7Memory: 256 MB DDR3LStorage: 16GB EMMCOperating System: for Linux 5.10 with BuildrootDashboard: Javascript, React, TailwindController: GoLangFirmware: CEthernet: RJ45 (up to 100 Mbps)USB: USB C (up to 480 Mbit/s)Video: HDMI MiniExpansion: RJ12 Expansion portLine voltage: 100-240V ACFrequency: 50Hz to 60Hz, single phaseOperating temperature: 50 to 95℉ (10 to 35 ℃)Storage temperature: -40 to 116℉ (-40 to 47℃)Relative humidity: 5% to 90% noncondensingHeight: 31 mm (1.22 inches)Width: 43 mm (1.69 inches)Depth: 60 mm (2.3 inches)Weight: 30 gram (4.79 oz)Color: BlackMaterial: plasticPackage Contents:1 * ControllerOnly the above package content, other products are not included.Note: Light reflection 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.