+ Spec

.-System Information- 　Processor Intel Celeron J3455 Quad Core CPU 1.50 GHz 　System Memory DDR3L 1866 4GB RAM SO-DIMM .Storage 　Storage 32GB eMMC on board .Panel 　LCD Size 21.5" 　LCD Panel TFT LCD 　Display Type Full HD 　Resolution 1920x1080 　Pixel pitch 0.24795 (H) x 0.24795 (V) (mm) 　Luminance 250 cd/m² 　Contrast ratio 3000 　Viewing angle 178 (U), 178 (D), 178 (L), 178 ( R) 　Response time 30ms 　Backlight LED 　Touch Type Projective Capacitive 　Touch Light Transmission 85% .I/O 　External I/O Connector 1 x Power jack 1 x HDMI 2 x USB 3.0 Type A 1 x RJ45 1 x Headphone Jack 1 x Power button 　Internal I/O Connector 1 x Micro USB 1 x USB interface , 1 x DMIC interface 1 x USB touch interface 1 x M.2 B-Key(3042) 1 x M.2 E-Key(2230) 1 x touch button control(power/vol/brightness) 1 x Power interface (12~24V) 1 x LVDS 1 x AMIC interface 1 x Speaker interface 1 x JSEN1 interface (I2C x2) 1 x RS232 (Tx/Rx/Rts/Cts) interface 1 x RS232 (Tx/Rx/Rts/Cts) , RS485 (Tx/Rx/Rts/Cts) 1 x JGPIO1 (GPIO 16bit) 1 x RTC Battery interface 1 x Micro SIM Card socket for LTE module 1 x Micro SD slot .Wireless Communication 　WLAN 802.11 a/b/g/n/ac .Display 　Multiple Display LVDS + HDMI .Certifications 　Certification Information CE, FCC Class A .Mechanical & Environmental

Operating Temperature 0°C ~ 40°C 　Storage Temperature -20°C ~ 60°C 　Operating Humidity 40°C @ 95% Relative Humidity, Non-condensing 　Dimension (W x L x H) 515 x 322 x 53.7 mm 　Weight 4.3kg 　Power Requirement DC 12~24V Input 　Power Mode DC Jack, DC input 4pin header .Software Support 　OS Information 2019 Windows 10(64 bit) .Ordering Information 　Ordering Information OFT-21W04-3411-A1R_OFT-21W04-4G_32G-Win10