High stability, 7x24 hours without downtime, using fanless CPU processor with low power consumption and high stability. High reliability, no handling errors are allowed, and strict tests are passed. With self-recovery function, to deal with unexpected situations, such as uninterrupted disconnection and shutdown for a long time. Communication interface suitable for industrial use, easy to expand. Adapt to the industrial complex and harsh environment, such as strong, shockproof, moisture-proof, dust-proof, high temperature resistance. Simple and easy secondary development, multi-platform, multi-language support, providing routines.1.Parameters

Product model	WLT-070R-AP20
Basic parameters	● CPU: Cortex® -A8 architecture，frequency 1.0GHZ ● Memory: 512MB DDR3 ● Flash：256MB NandFlash
Display screen	● Size：7 inch ● Resolution：800×480 ● Wide-temperature type，64K colors or 260K colors ● LCD backlight：lifetime > 25000 hours
Touch screen	4-wire resistance touch screen（driver inside）
Hardware interface	● 4 channel isolated 3-wire RS-232 serial port（COM1,COM2,COM3，COM4），2 channel（COM1、COM2）multiplex as RS-485 bus. ● 1 channel isolated CAN bus.（optional） ● 1 channel WIFI module inside.（optional） ● 1 channel USB device interface，support ActiveSync connect to PC to exchange data and debug application. ● 2 channel USB Host interface，support mouse, keyboard, U disk ,etc. ● 1 channe ● 100M Ethernet interface. ● 1 channel SD/MMC slot,support SD/MMC card . ● 1 channel 3.5mm audio output interface. ● 1 channel DC12V~24V，industria ● power solution，higher reliability.
Attention	When the serial port is connected, The GND wire of the two devices must be connected to avoid burning the serial chip and affecting communication.
OS	Windows CE 6.0 R3
Defend degree	IP65 (front panel)
Working environment	● power：12V~24V DC ,600mA ● working temperature：-10~55℃    ● storage temperature：-20~80℃ ● working humidity：10～90%RH
Size	● shell structure：plastic ● panel size：206.00 x 142.00 (mm) ● trepanning size：195.6.00 x 131.6 .00 (mm)
Application area	● industrial control，detection device，instruments and meters，security monitoring，medical apparatus and instruments, intelligent terminals embedded high-end application. ● Support CAN bus network deployment.
Software support	● Flash power-down protection function. ● IDE: Visual Studio 2005/2008.net(.net 2.0 Compact)、EVC++ 、 Labview development. ● Easy change the user-defined splash screen. ● Support display screen rotation (degree: 0/90/180/270)

2.Interface definition

1 CANL	2 CANH
3 GND	4 COM3-RX of RS-232
5 COM3-TX	6 COM4-RX of RS-232
7 COM4-TX of RS-232	8 COM2-485B
9 COM2-485A	10 GND
11 COM1-485B	12 COM1-485A

2.1 RS-232 interface 4 channels，support the highest-level baudrate 115200bps. The corresponding interface in Linux system is COM1 ~ COM4. Specially COM1 and COM2 have 2 output type as RS-232 and RS-485. 2.2 RS-485 interface The corresponding port in Win CE system is COM1、COM2. And COM1/COM2 is a multiplexing of COM1/COM2 of DB9 interface. 120 ohm(Ω) terminal resistance will be needed additionally for a bus network deployment. 2.3 CAN Bus interface The function of Can-bus interface is optional. Also, 120 ohm(Ω) terminal resistance will be needed additionally for a bus network deployment. 2.4 Power interface As shown in the figure:3. Exterior size Exterior size: 206×142 （mm）          Trepanning size: 195.6×131.6（mm）