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)
				
 
               
               
               
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