> For the complete documentation index, see [llms.txt](https://docs.getdor.com/dtm-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.getdor.com/dtm-docs/hardware/overview/hardware-specs.md). # Hardware specs ## Summary The sensor collects secure, anonymous foot traffic counts using thermal sensing and machine learning algorithms. It attaches to the top of any single or double sized door frame, using a magnetic mounting plate installed with adhesive strips. It can be installed in 5 minutes without any technicians or drilling needed. ![](/files/plt7NcMpBDcGxiiGpQvC) ## Device Specifications * **Size:** 7.70 in x 1.92 in x 1.93 in (195 mm x 49 mm x 49 mm) * **Weight:** 0.80 lbs (363 g) * **Power:** 1-2 years of battery life, optional 5V DC (see [Powering your device](/dtm-docs/hardware/setup/powering-your-device.md)) * **Battery:** Replaceable high energy lithium batteries or Alkaline (see [Powering your device](/dtm-docs/hardware/setup/powering-your-device.md)) * **Optimal Door Dimensions:** Height - Up to 12 ft (3.6 m) Width - Up to 8 ft. (2.4 m) (see [Doorway Compatibility](/dtm-docs/hardware/installation/doorway-compatibility.md)) * **Wireless:** Wi-Fi 802.11b/g/n, 2.4GHz/5.0GHz, WPA2 encryption, Bluetooth low energy, LoRaWAN (see [Connectivity Requirements](/dtm-docs/hardware/setup/connectivity-requirements.md)) ## Sensor Diagram