# What is the quietest motion sensor available? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What is the quietest motion sensor available?

## Products

### DSC BV500 Bravo 5 Ceiling Mounted 360 Degree Motion Detector
```yaml
product: dsc-bv500-bravo-5-ceiling-mounted-360-degree-motion-detector
brand: DSC
price_gbp: 44.33
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
sensor_range: 12.2
detection_angle: 360
```

- **Price:** £44.33 [^1]
- **Summary:** The DSC BV500 is a hardwired passive infrared motion detector designed for flat-ceiling installation. It provides 360-degree coverage, with a maximum detection diameter of 12.2 m when mounted at 3.6 m, and suits residential or commercial alarm systems.
- **Ideal For:** This is not the quietest motion sensor available because no alarm sound level is specified and it is a hardwired detector that relies on an external alarm system for audible alerts.

### Honeywell IS335 Motion Sensor
```yaml
product: honeywell-is335-motion-sensor
brand: Honeywell
price_gbp: 16.97
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
pet_immunity: Selectable up to 80 lb
sensor_range: 17.07
```

- **Price:** £16.97 [^2]
- **Summary:** The Honeywell IS335 is a hardwired indoor PIR motion detector with a 40 ft x 56 ft detection range and selectable pet immunity for animals up to 80 lb. Its sealed optics, consistent Fresnel-lens sensitivity, and 2,000-lux white-light immunity help reduce false alarms, making it suitable for residential alarm systems.
- **Ideal For:** It is not suitable for the quietest motion sensor available because the IS335 is a hardwired PIR detector with no published alarm sound level, although its sealed optics and pet-immunity setting can help reduce false alarms.
- **Additional Sources:** [^3]

### Honeywell IS3035V PIR Motion Detector
```yaml
product: honeywell-is3035v-pir-motion-detector
brand: Honeywell
price_gbp: 31.02
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
pet_immunity: Up to 80 lbs
sensor_range: 12 x 17
motion_sensitivity: Uniform Sensitivity Optics
```

- **Price:** £31.02 [^4]
- **Summary:** The Honeywell IS3035V is a hardwired PIR motion detector with a 12 x 17 m coverage area, selectable pet immunity, dual-slope temperature compensation, and uniform-sensitivity Fresnel optics. It suits residential or commercial wired alarm systems, particularly installations needing reliable coverage and reduced false alarms.
- **Ideal For:** It suits the search for the quietest motion sensor because it is a hardwired detector with no built-in audible alarm sound level specified, so it does not add a local siren or alert noise.
- **Additional Sources:** [^5], [^6]

### Nanoleaf Sense+ Smart Wireless Switch With Built-in Motion and Daylight Sensors CGC7VVZSTH
```yaml
product: nanoleaf-sense-smart-wireless-switch-with-built-in-motion-and-daylight-sensors-cgc7vvzsth
brand: Nanoleaf
price_gbp: 22.18
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
battery_life: 1+
sensor_range: 6-10
detection_angle: 120
```

- **Price:** £22.18 [^7]
- **Summary:** The Nanoleaf Sense+ is a wireless, battery-powered smart switch with passive infrared motion sensing and daylight sensing. It supports programmable lighting controls, can be wall-mounted or used as a portable remote, and suits renters and smart-home users who want automated lighting without hardwiring.
- **Ideal For:** For a quiet motion-sensor setup, it is suitable because it uses passive infrared sensing and is designed to automate compatible lights without a documented audible alarm, although no alarm sound level is specified.
- **Additional Sources:** [^8]

---
## References & Sources
[^1]: AlarmSystemStore.com, accessed 2026-09-14. https://www.alarmsystemstore.com/products/dsc-bv500-bravo-5-ceiling-mdsc-bv500-bravo-5
[^2]: AlarmSystemStore, accessed 2026-09-14. https://www.alarmsystemstore.com/products/honeywell-is335-motion-sensor
[^3]: Konnected, accessed 2026-09-14. https://konnected.io/products/honeywell-wired-passive-infrared-pir-motion-sensor-1
[^4]: Alarm System Store, accessed 2026-09-14. https://www.alarmsystemstore.com/products/honeywell-is2535-pir-motion-detector
[^5]: Alarm Grid, accessed 2026-09-14. https://www.alarmgrid.com/products/resideo-is3035v
[^6]: GeoArm, accessed 2026-09-14. https://www.geoarm.com/is3035v-honeywell-home-hardwired-pir-motion-detector.html
[^7]: Nanoleaf, accessed 2026-09-14. https://nanoleaf.me/en-us/products/nanoleaf-sense-plus-wireless-smart-switch
[^8]: Best Buy, accessed 2026-09-14. https://www.bestbuy.com/product/nanoleaf-sense-smart-wireless-switch-with-built-in-motion-daylight-sensors-1pk-white/CGC7VVZSTH