[Main](:start) # Security ## Links - [WIKIPEDIA: Z-Wave](https://en.wikipedia.org/wiki/Z-Wave) - Outdoors, longer distance. - [WIKIPEDIA: Zigbee](https://en.wikipedia.org/wiki/Zigbee) - In-home, shorter distance, faster. - [ARTICLE: Z-Wave LR](https://z-wavealliance.org/what-is-z-wave-long-range-and-how-does-it-differ-from-z-wave/) ([more](https://www.engineering.com/story/is-z-wave-lr-a-game-changer)]) - One mile range - [Hubitat](:hm_hubitat) - The "brains" of the security system. ## Devices ### Zigbee - (TBD: first) - (TBD: second) ### Z-Wave - (TBD: first) - (TBD: second) ### Z-Wave LR - (TBD: first) - (TBD: second) ## Excerpts ### Z-Wave LR Z-Wave Long Range (LR) was announced in September 2020, a new specification with an improved range over regular Z-Wave signals.[8] The specification supports a maximum output power of 30 dBm, which can be used to bolster transmission range by up to several miles. In testing, Z-Wave LR had a transmission distance of 1-mile (1.6 km) direct line of sight utilizing +14-dBm output power.[58] Z-Wave LR is an extra 100-kb/s DSSS OQPSK modulation addition to the Z-Wave protocol. The modulation is treated as a fourth channel, allowing gateways to add LR nodes to the existing Z-Wave channel scanning. Z-Wave LR also increases scalability on a single smart-home network by up to 4,000 nodes, a 20x increase compared to Z-Wave.[58] Z-Wave LR operates on low power so that sensors can last for 10 years on a single coin cell. It is backwards compatible and interoperable with other Z-Wave devices.