TT has performed a remarkable achievement in Security Field since it's been established in 2004, based in Shenzhen, China. Over the past 15 years, we were so much experienced through the time of traditional CCD / CVBS / SDI analogue cameras, and went through to the HD CMOS camera period, and the evolution to the current popular 4K IP camera system and Cloud Home Wi-Fi Battery Cameras. With 15 years of manufacturing and exporting experiences in surveillance monitoring equipment, TT has been focusing on its quality and services with best competitive prices ever since, with highly experienced R&D team, advanced SMT machines and professional management teams, combined together to guarantee the quality control system in order to deliver only qualified products to our customers. TT's Major Products are Professional Industrial Type of IP Cameras and NVRs, HD Analogue Cameras and DVRs, and Latest and most popular Home Cloud Wi-Fi Battery Cameras which includes Solar Powered Battery Wi-Fi Cameras, Battery Powered Wireless Wifi Video Doorbell, Smart Home Battery Powered Cloud Wifi IP Cameras, they can be monitored remotely by Smart Phone App with Alexa Amazon and Google Home Two-way Voice Intercom Functions. OEM and ODM PCB module design and manufacturing welcomed!All TT's Products got CE, FCC & RoHS Certifications and in line with ISO9001 standard. Looking forward to consolidating a long-term business relationship with your esteemed company! We are ready to support you grow in Business!