Hign-concerned Chemical: None Gharacter LCD Display Module Screen Yellow Green Screen 20*4 Resolution Model Number: WH2004L Type: WH2004L Large COB Specification parameters WH2004L is 20 characters by 4 lines LCD display module which is built in with ST7066 controller IC; its default interface is 6800 4/8-bit parallel. These 20x4 LCD modules are also available in SPI and interface by using RW1063 controller IC. This type of LCD Display 20x4 Module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. The LEDs can be driven by pin 1, pin 2, or pin 15 pin 16 or A/K. Model NO:WG24064A Model size(WxHxT):180.0x65.0x12.5mm View Area():133x39mm Active Area():127.16x33.88mm Dot Pitch():0.53x0.53mm Dot Size ():0.49x0.49mm View Direction:6 O'clock LCD Mode:Yellow-green Dot Matrix:128x64 Dots Interface:6800 Backlight:LED WH2004L : 6800 interface (ST7066 IC) Color: Picture Color Material: plastic Package Contents: 1*Character LCD Module Only 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.