up-Date
the RFID keypad requiers constant power at all times, if you have a power faillure and the power comes back on it will
activate the relay and disarm your system, so you have to use a 9v battery and a transformer use to diods to make a batery back-up. so when power go's out it will run on the batery,some sort of fail safe in the design.
the CL-8 has a pair of isolated contacts and go's in to a stand by mode to save batery life.
the CL-83 comes with 2 keypads 1 for outdoor and 1 for indoor but about 250.00.
i think for easy hook up the CL-8 indoor wood be a better choice.
the used CL-8 i got off ebay didn't work had to send it back,be-carful of used ones, i think the keys where wore out becouse it wood not excepted inputs, so i wood get a new one.