Features: 1. 2.4G transmission frequency, barrier-free communication distance of about 150M, (field test) 50 meters of partition wall. Dual-function wireless intercom technology, clear sound, no noise, not stuck. 2. Adopt digital processing technology, fully automatic wireless transceiver function, excellent performance and high reliability. 3. Indoor unit uses LCD 7-inch digital true color display, four-division design. 4. The outdoor unit uses a CMOS 600,000 pixel camera. 5. Clear night vision function, can achieve 24-hour call, intercom, unlock and other functions. 6. The indoor unit automatically takes photos or records through the outdoor unit. Specification: Monitor (indoor unit): Screen size: 7 inches Display size: about 235*130*20mm/9.25*5.12*0.79in LCD resolution: 800 * 480 Image resolution: 640 * 480 Monitoring, video, photo, visual, intercom, unlock. Four-screen monitoring (Note: camera purchase) Extended memory: maximum support for 32G TF card (standard without memory card) Video format: ASF (can be directly played back, the computer needs to be installed with the software to play) Single screen status: 640 * 480 @ 25FPS Four-picture status: 320*240 @25FPS Photo format: 640 * 480 JPG Power input: AC: 100-240 50/60Hz Power output: DC: 5V/2A Video output system: PAL and NTSC(optional) Video output: 1Vp-p CVBS Working current: less than or equal to 400MA Working frequency: 2.4GISM digital public frequency band Camera(outdoor unit): Touch button design. Night vision is compensated externally. The infrared distance is 3-5 meters. HD 60W pixels. Connect the electric lock function. Lens: 3.6MM 92 degree HD 100 Power supply: DC: 5V/1A, AC: 100-240V/50-60HZ Package List: 1 * Outdoor Unit (Camera) 1 * Indoor Unit (Monitor) 2 * 3.7V Lithium Battery 2 * Power Supply 1 * Screw Package 1 * 5 Core Terminal Line 1 * Manual 1 * Antenna 1、2.4G transmission frequency, barrier-free communication distance of about 150M, (field test) 50 meters of partition wall. Dual-function wireless intercom technology, clear sound, no noise, not stuck. 2、Adopt digital processing technology, fully automatic wireless transceiver function, excellent performance and high reliability. 3、Indoor unit uses LCD 7-inch digital true color display, four-division design. 4、The outdoor unit uses a CMOS 600,000 pixel camera. 5、Clear night vision function, can achieve 24-hour call, intercom, unlock and other functions.