The addition of Schlage NDE and LE wireless locks introduced a new device communication pattern to Pure Access. In contrast to the ISONAS line-powered reader controllers with a realtime connection, these wireless locks rely on batteries for power and periodic updates over WiFi to communicate with Pure Access.
The battery life of wireless devices is a function of two main variables:
- How frequently credentials are presented to the device
- How frequently the device wakes up to establish a WiFi connection to transmit data back to the host software
By default, wireless devices will wake up their WiFi radios and communicate with Pure Access once every 24 hours. This frequency is used to determine the battery life graphs in the following charts:
Pure Access also allows end users to configure the devices’ check-in frequency and schedule in the device settings. This check-in frequency has a predictable and direct effect on battery life. Having a device check in via WiFi twice per day (or every 12 hours) will result in approximately half the expected battery lifetime (i.e. 1 year instead of 2 years) than the default once-per-day setting.
When a device check-in occurs, the device receives updated device settings and access control configuration from Pure Access and provides activity history to Pure Access.
Outside of specific user interaction, there is only one scenario in which the device will establish a WiFi connection to Pure Access outside what has been configured in Pure Access. If alerts are enabled for the tenant in Pure Access, the device will establish a WiFi connection to Pure Access and report alert information if certain alert conditions are met, including; Extended Open, Forced Door, and Tamper Alerts.
Due to the limited check-in frequency configured to preserve battery life, there may be times that you need to update a device immediately, outside of the normally scheduled recurring check-ins. This process is referred to as a Force Check-In.