User's Manual
if required due to outages, link failures or other conditions. This leads to an extremely
resilient network topology compared to other star topologies.
How Milli 5 Battery Meshing Works
In a battery-powered device, Milli 5 operates off the host’s power supply. To conserve
power, Milli 5 spends most of its time sleeping. (Nodes sleep when not otherwise
occupied with operations.) Milli 5 sleeps at about 1.4μA or ~0.3 Joules/day. During
installation, battery‑powered devices (BPDs) perform an aggressive discovery of other
BPDs or constantly powered devices (CPDs). Thereafter, BPD nodes wake up periodically
and listen in a receive window. The energy required for receiving is approximately 3mJ/
second. Upon power‑up, Milli 5 listens periodically for discovery packets from CPD/
BPD. These are used to establish time synchronization and establish the node on the
network.
SPECIFICATIONS
Radio and Networking
Capabilities
» Operates in 870-875.6 and 902-
928 MHz
» RF output power: 200 mW (+23
dBm)
» ARM Cortex-M3 32bit-
processing for low power
» 50 kbps data rate
Security Assurance
» Certicate‑based app‑layer
protocol authentication
(ECDSA)
» Data Condentiality (AES128)
» Firmware validation (ECDSA)
» Link Layer (AES128)
Hardware Interfaces Available
» F/W currently supports CoAP
over UART
Please contact Silver Spring
Networks about the roadmap
for support of other interfaces
or if your application requires a
different interface.
The (logical) network topology of a battery mesh. The nodes in the diagram
represent logical positions (not physical locations) in the battery mesh routing tree.