Camera system (institutions) — serviced once a year (per 8 cameras)
Added to an annual package (ready, custom or institution); not sold on its own.
Servicing the CCTV system with its recorder, once a year.
Unit: per 8 cameras. Quantity = number of cameras ÷ 8, rounded up.
Carried out during your annual subscription visits; the engineer confirms the numbers at the first visit: any excess is charged and any shortfall refunded. The price is fixed for the subscription year.