Sensor Placement Guide for Homes

Homeowner Summary

Where you place sensors matters as much as which sensors you install. A water leak sensor sitting on a shelf instead of on the floor next to your water heater will never detect a leak. A motion sensor pointed at a heating vent will trigger false alerts all day. A temperature sensor mounted on an exterior wall will read 3 to 5 degrees different from the actual room temperature.

This guide provides room-by-room recommendations for optimal sensor placement throughout your home. Your Shipshape service professional uses this guide (along with the Shipshape Installer Protocol) to determine exactly where each sensor goes during your installation visit. Understanding the reasoning behind placement helps you avoid accidentally moving or obstructing sensors during cleaning, renovations, or furniture rearrangement.

The typical Shipshape-monitored home uses 8 to 15 sensors for comprehensive coverage. Smaller homes and condos may need as few as 6. Larger homes and estates may use 20 or more. The right number depends on your home's size, layout, number of water fixtures, and which systems you want monitored.

Room-by-Room Placement

Kitchen

| Sensor | Placement | Purpose | |--------|-----------|---------| | Water leak sensor | On the floor under the sink, toward the back near supply lines | Detect supply line leaks, drain connection failures | | Water leak sensor | On the floor next to or in front of dishwasher | Detect dishwasher supply line or drain hose leaks | | Door/window sensor (optional) | On exterior door frame if kitchen has exterior access | Monitor access point | | TriSensor or MultiSensor (optional) | On a wall or shelf away from the stove and oven | Monitor ambient temperature (avoid placing near cooking heat) |

Kitchen tips: Avoid placing temperature sensors near the stove, oven, or dishwasher exhaust — they produce heat that skews readings. Water leak sensors should be placed on hard flooring, not on rubber mats that could prevent water from reaching the probes.

Bathrooms

| Sensor | Placement | Purpose | |--------|-----------|---------| | Water leak sensor | On the floor under each sink vanity | Detect supply line and drain leaks | | Water leak sensor | On the floor at the base of each toilet, near the supply line | Detect wax ring failure, supply line leak | | Water leak sensor (master bath) | On the floor near the bathtub/shower if accessible | Detect overflow or supply line leak |

Bathroom tips: Bathrooms are high-humidity environments. Motion and temperature sensors are optional here — the primary concern is water damage. Place water sensors on tile or vinyl flooring, not on bath mats. Ensure sensors are not in the direct splash zone from the shower.

Utility Room / Laundry

| Sensor | Placement | Purpose | |--------|-----------|---------| | Water leak sensor | On the floor behind the washing machine, near supply hose connections | Detect supply hose burst (one of the most common catastrophic leaks) | | Water leak sensor | On the floor next to the water heater, on the drain pan overflow side | Detect tank failure or pressure relief valve discharge | | TriSensor or MultiSensor | On the wall near the water heater (not on the heater itself) | Monitor ambient temperature, detect HVAC or heater anomalies | | Energy Meter | Inside the electrical panel on this floor (if accessible) | Whole-home energy monitoring |

Utility room tips: This is the most sensor-dense room in most homes because it contains the most high-risk water and electrical equipment. Place the water heater sensor where water would flow first if the tank developed a leak — usually the side with the drain pan overflow or the lowest point of the floor.

Living Areas (Living Room, Family Room, Den)

| Sensor | Placement | Purpose | |--------|-----------|---------| | TriSensor or MultiSensor | Wall-mounted at approximately 7 ft height, facing the main room area | Motion detection, temperature, light level | | Door/window sensor | On each exterior door frame (front door, back door, sliding door) | Monitor access points | | Door/window sensor (optional) | On windows that are regularly opened | Monitor ventilation behavior |

Living area tips: Mount motion sensors so they have a clear line of sight across the room, not pointed at a wall. Avoid placement directly above heating vents or in direct sunlight, which causes temperature reading errors. For rooms with cathedral or vaulted ceilings, mount at 7 to 8 feet rather than higher — PIR sensors lose accuracy at greater distances from the detection area.

Bedrooms

| Sensor | Placement | Purpose | |--------|-----------|---------| | TriSensor or MultiSensor | On the wall near the bedroom door, at 7 ft height | Temperature monitoring, occupancy detection | | Door/window sensor (optional) | On bedroom windows, especially ground-floor | Security monitoring |

Bedroom tips: Not every bedroom needs a sensor. Prioritize the master bedroom and any bedrooms on floors where the HVAC performance needs monitoring. If budget allows, a TriSensor in each bedroom enables room-by-room temperature comparison, which is extremely valuable for diagnosing ductwork problems.

Basement

| Sensor | Placement | Purpose | |--------|-----------|---------| | Water leak sensor | On the floor near the sump pump | Detect sump pump failure or groundwater intrusion | | Water leak sensor | On the floor at the lowest point of the basement | Detect any water accumulation | | MultiSensor | On the wall in the main basement area | Temperature, humidity (critical for mold detection), motion | | Door/window sensor | On basement window wells or exterior access doors | Security monitoring |

Basement tips: Basements are critical monitoring areas because water damage and humidity problems often develop slowly and go unnoticed. The MultiSensor (with humidity sensing) is preferred over the TriSensor in basements because humidity monitoring is essential for mold prevention. Place the MultiSensor on an interior wall, not against the foundation wall, for accurate ambient readings.

Attic

| Sensor | Placement | Purpose | |--------|-----------|---------| | TriSensor or MultiSensor | Mounted on a rafter or joist, away from insulation | Temperature monitoring for HVAC and roof assessment | | Water leak sensor (optional) | Under HVAC air handler if located in attic | Detect condensate overflow |

Attic tips: Attic temperatures can reach extreme highs (140+ F in summer) and lows (below freezing in winter). Verify the chosen sensor's operating temperature range. The TriSensor 8 and MultiSensor 7 are rated to 50 C (122 F), so in extremely hot attics, the sensor should be placed in a shaded area near the eave rather than at the ridge peak. If an HVAC air handler is in the attic, a water leak sensor under the condensate pan is critical — attic leaks cause extensive ceiling and insulation damage.

Garage

| Sensor | Placement | Purpose | |--------|-----------|---------| | Door/window sensor (Pro model) | On the garage door, with tilt detection | Detect garage door open/close status | | TriSensor (optional) | On the wall near the interior house access door | Temperature monitoring, motion detection | | Water leak sensor (optional) | On the floor near the water heater (if in garage) | Detect water heater leaks |

Garage tips: The Pro model of the Door/Window Sensor is recommended for garage doors because it uses tilt detection, which works with the overhead door mechanism. Standard magnetic sensors require too large a gap tolerance adjustment for most garage doors. If the garage is detached, a range extender in the main house may be needed.

Signal Considerations

Placement for Optimal Z-Wave Signal

1. Central hub placement — The hub should be located as centrally as possible relative to the sensors. A hallway closet on the main floor is often ideal.
2. Avoid metal barriers — Do not place sensors behind large metal objects (refrigerators, filing cabinets, metal shelving). Metal reflects and absorbs Z-Wave signals.
3. Height matters — Sensors mounted higher (6 to 8 feet) generally get better signal propagation than sensors at floor level, because they are above most furniture and obstructions. Exception: water leak sensors must be at floor level.
4. Distance between hops — Ensure that no sensor is more than 80 feet (25 meters) from the nearest mains-powered Z-Wave device. If it is, add a range extender.
5. Avoid interference sources — Keep sensors at least 3 feet from WiFi routers, microwave ovens, and baby monitors. While Z-Wave operates on a different frequency, strong 2.4 GHz transmitters can cause incidental interference.

Construction Material Impact

| Material | Signal Attenuation | Notes | |----------|-------------------|-------| | Drywall on wood studs | Low | Standard residential, excellent signal | | Plaster on wood lath | Low-moderate | Slightly more attenuation than drywall | | Plaster on metal lath | High | Common in pre-1960s homes, significant signal loss | | Brick (single layer) | Moderate | Common in exterior walls | | Concrete block | Moderate-high | Common in basements and commercial | | Poured concrete with rebar | High | May require extender per room | | Metal siding or roofing | Moderate | Acts as partial Faraday cage | | Glass (windows) | Low | Good signal path |

Mounting Methods

| Method | Best For | Pros | Cons | |--------|----------|------|------| | Adhesive strips (3M Command) | Renters, temporary placement, lightweight sensors | No holes, easy removal | Can fail in humidity, limited weight capacity | | Screw mount | Permanent installations, heavy or security-critical sensors | Most secure, reliable | Requires drilling, leaves holes | | Magnetic mount | Sensors with magnetic base (TriSensor 8) | Easy battery access, quick repositioning | Limited to included magnetic base plate | | Shelf/surface placement | Test placements, non-critical locations | No mounting needed | Can be knocked over, moved accidentally | | Recessed mount | Custom installations, new construction | Invisible, clean aesthetics | Requires cutting into wall/ceiling, permanent |

Coverage Planning: How Many Sensors

Minimum Coverage (6-8 sensors)

For homes on a budget or those starting with core monitoring:

• 1 hub
• 3-4 water leak sensors (water heater, washing machine, main bathroom, kitchen sink)
• 1 energy meter
• 1-2 door/window sensors (front door, garage door)
• 1 TriSensor (main living area for temperature baseline)

Standard Coverage (10-15 sensors)

The Shipshape-recommended configuration for most homes:

• 1 hub
• 4-6 water leak sensors (all major water fixtures)
• 1 energy meter
• 3-4 door/window sensors (all exterior doors)
• 2-3 TriSensors or MultiSensors (living area, master bedroom, basement)
• 0-1 range extenders (if needed for home size)
• 1 siren (for critical audible alerts)

Comprehensive Coverage (15-25 sensors)

For larger homes or homeowners who want maximum protection:

• 1 hub
• 6-8 water leak sensors (every fixture with supply lines)
• 1 energy meter
• 5-8 door/window sensors (all exterior doors and windows)
• 4-6 TriSensors or MultiSensors (every major room)
• 1-2 range extenders
• 1 siren + 1 doorbell

Shipshape Installer Protocol

The following protocol is used by Shipshape-certified service professionals during sensor installation visits. It ensures consistent, optimal placement across all Shipshape-monitored homes.

Pre-Installation

1. Walk the home — Before unpacking sensors, walk every room with the homeowner. Identify all water fixtures, HVAC equipment, electrical panel location, and exterior access points.
2. Map the layout — Sketch or photograph the floor plan. Mark the intended location for each sensor. Note construction materials (especially basement walls, interior wall types, and any concrete or metal barriers).
3. Plan the hub location — Choose a central, permanently powered location with Ethernet access. Plug in and power on the hub first.
4. Test signal — Before mounting sensors permanently, pair each sensor while holding it at the intended location. Verify it connects to the hub. If signal is weak, plan a range extender.

Installation Order

1. Hub (pair and verify cloud connection)
2. Range extenders (pair and verify, run initial network repair)
3. Water leak sensors (highest priority — these prevent the most expensive damage)
4. Energy meter (requires electrical panel access, may need to be scheduled separately if an electrician is needed)
5. Door/window sensors (exterior doors first, then windows)
6. Environmental sensors (TriSensors, MultiSensors)
7. Siren/doorbell (last, as these are notification devices)

Post-Installation

1. Run Z-Wave network repair — After all devices are installed and positioned, run a full network repair.
2. Verify all sensors — Open and close every monitored door. Place a damp cloth on every water sensor. Walk past every motion sensor. Confirm events appear in the SmartThings app.
3. Document placement — Take a photo of each sensor in its installed location. Record the location in the Shipshape installation notes for the home.
4. Configure SAM alerts — Verify that SAM is receiving data from all sensors. Set up alert routing (homeowner push notifications, dealer dashboard alerts) and configure any custom thresholds.
5. Educate the homeowner — Show the homeowner where each sensor is located, what it monitors, and what they should do if they receive an alert. Emphasize: do not move or unplug any sensors.

Common Installation Mistakes to Avoid

• Pairing sensors at the hub and then moving them to distant locations without running a network repair (devices retain the direct route and may not function at distance)
• Placing water leak sensors on carpet or bath mats (water must contact the metal probes)
• Mounting motion sensors facing windows (PIR sensors can false-trigger from sunlight and outdoor heat sources)
• Installing the energy meter CT clamps on a sub-panel feed instead of the main incoming conductors
• Forgetting to secure sensor mounting with screws in high-traffic areas (adhesive fails from door vibration)
• Placing the hub inside a metal cabinet or behind a TV (metal blocks Z-Wave signals)
• Not testing each sensor after mounting (a sensor that pairs at 3 feet from the hub may not communicate from 60 feet away)

Shipshape Integration

Sensor placement directly determines the quality and completeness of SAM's monitoring. Every article in the hardware category describes individual device integration, but placement ties it all together.

SAM Monitoring:

• SAM builds a virtual model of the home based on sensor locations. Each sensor's data is interpreted in context of where it is placed. A temperature reading from a basement sensor is evaluated differently than one from an attic sensor.
• Placement metadata (recorded during installation) enables SAM to generate location-specific alerts: "Water detected under kitchen sink" rather than "Water detected by Sensor 7."
• SAM tracks sensor coverage as a percentage of critical areas monitored. Homes with gaps in coverage receive recommendations for additional sensors.

Home Health Score:

• Comprehensive sensor coverage is the foundation of a high Home Health Score. A home with sensors covering all water fixtures, the electrical panel, all exterior doors, and key environmental zones scores significantly higher than one with partial coverage.
• The Score weights water monitoring highest, followed by environmental monitoring, then access monitoring, then energy monitoring. This reflects the relative financial risk of each category.

Alert Routing:

• Alerts include location context based on sensor placement metadata. This enables homeowners to act faster ("check under your kitchen sink") and enables dealers to dispatch with the right tools and parts.
• Multi-sensor correlations (e.g., a water sensor alert plus a humidity spike from a nearby MultiSensor) increase alert confidence and severity.

Dealer Dashboard:

• Dealers see a sensor coverage map for each managed home, making it easy to identify gaps during service visits.
• Installation documentation (photos, placement notes) is accessible from the dealer dashboard for reference during return visits.
• Coverage percentage is tracked fleet-wide, enabling dealers to upsell additional sensors to homes with incomplete monitoring.
• SAM generates personalized sensor upgrade recommendations for each home based on its specific layout and current coverage.