How to Wire an Insteon 2443-222 Micro On/Off Switch Module to a Motion Activated Floodlight for lighting automation. A while back I explained how to automate floodlights with an Insteon In-LineLinc Relay. This project explains how to do it with the newer and much smaller 2443-222.
I purchased an inexpensive UtiliTech Motion-Activated Floodlight Model #75005W from Lowes to demonstrate the Insteon 2443-222 wiring hookup:
Power Load Calculation:
The Insteon 2443-222 micro switch is rated for a maximum load of 15 Amps. Is this sufficient for the floodlight?
The Utilitech floodlight is rated for up to 120 Watt bulbs in each lamp holder which equals 240 total maximum watts.
- Amps = Watts / Volts, so 240 Watts / 120 Volts = 2 Amps.
The floodlight will draw a maximum of 2 Amps with two 120 Watt rated halogen or incandescent bulbs. LED bulbs are a better option and much more energy efficient; for example a 100 Watt equivalent LED floodlight bulb only draws 12 Watts which equates to 0.1 Amps. The total load for two LED floodlight bulbs is only 0.2 Amps!
So worst case the floodlight will draw a maximum of 2 Amps with 120 watt bulbs which is well under the 2443-222 rating of 15 Amps.
How to Wire a Motion Activated Floodlight with an Insteon 2443-222 Micro On-Off Module
Floodlight Factory Wiring Diagram
The out-of-the-box Utilitech Model # 75005W wiring is:
Which corresponds to the following wiring diagram:
Referring the above diagram, the floodlight operates by:
- Power from house goes directly to the motion sensor.
- The infrared motion sensor unit has a semiconductor switch to control power to the lamps.
- The motion sensor has 3 wires:
- Neutral (white)
- Hot (black) – line side power feed
- Load (red) – On/Off switched output that powers the lamps
- When the motion sensor is triggered 120 Volts AC (VAC) is applied to the Red load wire to power the lamps.
- The lamps stay On until the user-adjustable time delay expires at which point the Red load wire has zero volts.
- The motion sensor has 3 wires:
- The motion sensor housing has photocell to disable the lights during the daytime.
Most motion activated floodlights have the same wiring configuration.
Insteon 2443-222 to Motion Floodlight Wiring Diagram
The 2443-222 to floodlight wiring connections are:
The wiring connections and functions are:
- Line side Hot (black wire) feeds from the house wiring to both the Insteon 2443-222 Micro Module and the floodlight motion sensor unit.
- The motion sensor Red load/output wire connects to the Insteon Sense #1 Yellow wire.
This corresponds to the Latching Switch Operation Mode in the 2443-222 Owner’s Manual.
- When the motion sensor is triggered the Red wire supplies a constant 120 VAC to the Yellow Sense #1 wire. The default action is the Micro Module Load L1 terminal will turn On supplying 120 VAC to the floodlight lamps assuming there are no overriding Insteon actions (micro module button press, controller, scene or program command).
- When the motion sensor time On delay expires, the Red wire voltage goes to zero and the Micro Module Load L1 terminal is turned Off. Again assuming there no overriding Insteon commands.
- The cool thing is the 2443-222 can be controlled via Insteon commands to override the motion sensor and turn On or Off the Load L1 terminal and floodlights.
This is what the 2443-222 switch looks like when wired to the floodlight on my workbench. By personal preference, I flagged the NM-B 14/2 Line wire with a piece of red electrical tape and the Load wire with orange tape for easier identification (it helps when you’re on a ladder and working in cramped electrical boxes):
Short sections of NM-B 14/2 wire are used for the Insteon micro switch Line, Load and Neutral terminal connections.
Remove the Floodlight Factory Crimp Wire Nuts
The factory typically joins the floodlight wires using crimp nuts. Remove the nuts by squeezing open with pliers.
Note: You don’t really have to remove the neutral wire nut at the left side of the photo because all neutrals will be connected together. Just use the floodlight neutral pigtail to connect it to the Insteon micro switch and house wire neutral. I removed the factory installed neutral wire nut to reduce the number of pigtails and nuts.
Separate the wires after removing the two wire nuts:
Wire the Insteon 2443-222 per the above wiring diagram. Wiring tips:
- Use equal lengths of NM-B 14/2 wire for the Insteon micro switch Line, Load and Neutral terminals.
- Strip about 1/4 inch of insulation off the end of each wire to fit in the micro switch such that no bare wire is exposed.
- Secure the wires by tightening the small terminal screw on each wire.
- Use the appropriate size wire nut.
- IDEAL brand 73B Orange nuts for one or two stranded floodlight wires with a single NM-B 14/2 wire.
- IDEAL 76B Red nuts for two NM-B 14/2 wires with one or more stranded wires.
- Wrap the Sense #1 Yellow 24 AWG wire around the floodlight Red wire a couple of times then screw on the nut. Strictly speaking the 73B Orange nut may be too big but it held securely when I tugged on the yellow wire. The IDEAL 72B Blue is smaller and a better choice but I didn’t have 72B nuts on hand. A wire nut assortment kit can be helpful.
BTW – the thin Sense Yellow and Purple wires won’t burn up because they carry very little current, only ~0.17mA (milliampere) for 120V according to the Insteon Owner’s Manual.
Recall the Insteon 2443-222 is in the factory default Latching Switch Operation Mode – it’s straight out of the box and I’ve not modified any settings. The lights illuminated when I moved in front of the motion sensor:
Insteon 2443-222 Motion Floodlight Testing
I removed one light bulb to avoid overexposing the photos. The Sense #1 Yellow wire has no voltage according to my Fluke 2AC VoltAlert non-contact voltage tester when the floodlight is Off. I had to time this photo carefully because the floodlight kept turning on when I moved the slightest bit. The micro switch LED is Red indicating Off but almost impossible to see here:
I turned off the workshop lights to better see the micro switch and motion detector LEDs. The Fluke VoltAlert is against the hot/black wire from the house power feed:
I moved to activate the floodlight motion sensor. The Insteon micro switch LED turned from Red (Off) to Green (On) and the light bulb is powered. The voltage tester now shows 120 VAC on the Sense #1 Yellow wire:
Insteon Micro Module On / Off Button Testing
Satisfied the floodlight hookup is working correctly, I pressed the On and Off micro module switches to manually override the motion sensor signal. The two buttons control power on the Load L1 terminal and a convenience for testing during installation. You’ll hear an audible click when the tab is pressed. Pressing the On button always turned the floodlight On and pressing Off always turned the light Off:
You do have be mindful that pressing On/Off too quickly (within 2 seconds for the Utilitech floodlight) will put the light in Manual Override Mode which forces the light to stay On for 6 hours. Turn the floodlight Off for at least 5 seconds to return it to Automatic Mode activated by the motion sensor. You can always turn Off the light via the micro switch button or Insteon commands.
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