Electronic Alarms and Home Security Devices - Advice needed on Ademco 20p zone expansion

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santos1958
04-18-09, 07:27 AM
I have an ademco 20p with a single 5881ENM wireless receiver

I plan to add: Hardwired two-wire smoke detectors, 2-3 panic button, additional keypad and a keyfob. I have 7 hardwired zones in my house (not using resistor at the end) and 5 wireless zone.

Q1 - what is the best option to add additional wire zones: 4219 or turn on zone doubling (how easy is to do this)

Q2 - for the second keypad (different entrance), can I still configure it with only one partition or I have create second partition

Q3 - panic button - what is the hardware type - NC or NO, do I connect them in series or parallel

Q4 - smoke detector - do I connect them in series or parallel

Q5- keyfob - any additional hardware required or just the wireless router with 4 available zones

Thank you
Q5


MrRonFL
04-18-09, 08:28 PM
I have an ademco 20p with a single 5881ENM wireless receiver

I plan to add: Hardwired two-wire smoke detectors, 2-3 panic button, additional keypad and a keyfob. I have 7 hardwired zones in my house (not using resistor at the end) and 5 wireless zone.

Q1 - what is the best option to add additional wire zones: 4219 or turn on zone doubling (how easy is to do this)

Q2 - for the second keypad (different entrance), can I still configure it with only one partition or I have create second partition

Q3 - panic button - what is the hardware type - NC or NO, do I connect them in series or parallel

Q4 - smoke detector - do I connect them in series or parallel

Q5- keyfob - any additional hardware required or just the wireless router with 4 available zones

Thank you
Q5

The zone expander is a better choice than using zone doubling resistors (which works, but is a bit of a hassle).

You just set up the keypad address. Multiple keypads can live in the same partition.

For a wired panic button, you can do either (if you use EOL resistor on that zone). If you don't want to mess with the resistor, it has to be NC.

Smokes are wired in parallel with the resistor on the last device on the circuit.

Keyfobs take up 4 wireless zone slots, but Vista 20 has a group of specific zones dedicated to keyfobs.