Review on 📷 Wsdcam 7 Inch IP Camera Tester - Full HD 1080p Retina Display CCTV Monitor with Multiple Functions: SDI/TVI/AHD/CVI/Multimeter/TDR/OPM/VFL/POE/WIFI/4K H.265/HDMI in&Out/Firmware Update - X7-MOVTSADH by Ken Booker

Update 2020 Sometime after about 9-12 months the battery died in BOTH of my WDSCAM CCTV units. MFR made me write this review in 2019 to replace the screen that broke on this tester. He shipped the screen and was happy with both devices until the batteries died and it was turned into a paperweight. I have tried unsuccessfully to locate this battery using the part number and repeated emails to the manufacturer/seller. I need these blocks to work now or they will be from another manufacturer. In the end the manufacturer agreed to sell me the battery, indicated the delivery three times but it seems that it never arrived. Finally they said just use it with the power cord, no batteries are inaccessible meaning the device is a paperweight and useless. DO NOT BUY THIS DEVICE. THIS 2018 REVIEW: This product appears to be exactly as advertised, a bit of a learning curve without reading the manual but easy to make. I've only used analog and IP cameras with POE and they worked fine. Now that I have one of these I've seen several and they all seem happy with the device. Everyone agreed that these are well-designed devices that installers and CCTV service providers should have.