Working Without a Hub?
- Only the 7.5-inch model can connect to Wi-Fi directly.
- The new data cannot be push onto the display in real-time. The display will poll the data at a preset interval (e.g., 30 minutes). That is, the screen may not show the correct data until the next poll time.
- The battery life will then depends on the interval of polling. The typical duration is three months for 30 minutes interval.
What does the hub do?
The hub bridges the low power ZigBee to the WiFi/Ethernet (Internet). The ZigBee wireless network consumes much less power than a typical Wi-Fi network (about 1/100 on average), so the display/sensor can run on a battery.
Still prefer simple deployment?
Without a ZigBee hub, polling the new data at an interval drains more power and causes a delay while showing the message. SyncSign provides an alternative combination to solve this problem.
- Deploy the LoRa + WiFi model of 7.5-Inch Display
- Install the SyncSign LoRa Gateway
In this method, the Hub sends a short “notification” message to wake up the Display over LoRa; then, the Display pulls the data over WiFi furthermore renders them onto the screen.
Unlike the ZigBee, LoRa has better coverage. One SyncSign LoRa gateway is sufficient to cover a dense urban area within an approximately 3km radius. Also, one SyncSign LoRa gateway can support as many as 1000 displays and sensor nodes.
- Easy deployment, just one gateway for all displays/sensors throughout the campus.
- Fast response, Displays get updates within seconds.
- Long term autonomy, Displays have at least one-year battery life.