*The batch number relates to weeks and years, so 4119 means the unit was manufactured in the 41st week of 2019. The batch number for your monitor can be found on a silver sticker inside the battery compartment, underneath the battery, OR on a silver sticker on the base of the camera unit. It will be 8 digits long, the first 4 numbers relate to the date.
Please contact customer service if you need any help at all. Call: 01823 772998, WhatsApp/message: 07511 157068 or email: firstname.lastname@example.org