There are 4 products.
Hikvision DS-PM1-I16O2-WE-...
Hikvision DS-PM1-I16O2-WE wired radio extension module AX Pro
Price
€134.32
Risco RP432EWV800A - 32...
Risco RP432EWV800A extension module 32 radio zones removal of doubt
Price
€72.07