Can motion detectors be wired in parallel?
Samuel Coleman
Published Feb 22, 2026
Can motion detectors be wired in parallel?
Figure 1 – Motion detector or sensor In order to have more than one motion sensor or motion detector turn on the same group of lights it is necessary to wire the motion sensors in parallel with each other, in the same manner as the lights are wired. You can have as many motion sensors as you want in parallel.
Are motion sensor normally open or closed?
Most wired motion sensors use Normally Closed wiring. This is also commonly referred to as Series wiring. If you have multiple motions wired to the same zone, they will be wired in Series. There are some hardwired motion sensors that will allow users to choose between NC wiring and Normally Open (NO) wiring.
Can you connect 2 PIR sensors in series?
Fortunately, since PIR sensors have NC and COM contacts, it is possible to connect any number of them together in series to generate a single cumulative output signal which will be high (signal voltage) when motion is not being detected and low when motion IS detected – i.e. the cumulative signal will act just like the …
What are the correct location for installing the Honeywell is3035 PIR?
The optimal range is obtained at a mounting height of 7′ 6” (2.3 m). Allow a clear line-of-sight to all areas to protect. Do not directly face windows. Avoid close proximity to moving machinery, fluorescent lights, and heating/cooling sources.
Is the Ademco Vista 20p a good alarm system?
The Ademco Vista 20P has very good built-in lightning protection, even without an earth ground connection. See why a Vista 20P Ademco Alarm System is such a good choice for the average-size home. More information on Honeywell Security Systems.
What is the wiring diagram for Honeywell Vista 20p?
The image of the Honeywell Vista 20p wiring diagram is small, but you can click to enlarge it. Also, I highly recommend that you download a free copy of the complete Ademco manual, which will include a full-size image of the wiring diagram. It also gives detailed specs and ratings for the system and all its terminals.
Where does the negative wire go in Honeywell Vista?
And what you do is you all ran wires from your keypad to terminals four, five, six, and seven inside the panel. Just run our wire through that hole and separate out these wires. So, your negative wire is going to go to terminal four.
Where are the terminals on Honeywell Vista panel?
On a Honeywell VISTA panel, there is no polarity, so you can wire the black and red to whatever those two terminals you want. Terminals one and two on the far left side. So we’re just gonna stick these wires in here underneath the screw terminals, trying to get them in there. All right.
Can a smoke alarm be connected to an Ademco Vista 20p?
Fire zones use “normally open” type loops, so the EOLR always goes across the loop. The Ademco Vista 20P also supports 4-wire smoke alarms, but a relay will need to be added. This is to allow the panel to switch off power to the smokes during a “smoke detector reset” command.
What kind of resistors does the Ademco Vista 20p use?
Burglary zones use “normally closed” loops, so always connect the EOLR in series with the loop. Note that the Ademco Vista 20P, like many other panels, can be programmed to not use end-of-line resistors on burglary zones. This option simplifies wiring, and cleans up the panel a bit.
Where are the zones on the Ademco Vista 20p?
The Ademco Vista 20P has the capacity for 8 on-board zones using basic connections. Each zone uses a 2,000-ohm (2K ohm) end-of-line resistor, which can be located at the alarm contact or inside the panel. Zone doubling is an optional connection scheme that this panel supports; it adds 7 more hardwired zones to panel with no additional hardware.
The image of the Honeywell Vista 20p wiring diagram is small, but you can click to enlarge it. Also, I highly recommend that you download a free copy of the complete Ademco manual, which will include a full-size image of the wiring diagram. It also gives detailed specs and ratings for the system and all its terminals.