User's Manual

US Smart Outlet Purchase Spec September 21, 2012
Doc: D10025-002 Tendril Confidential Page 3
2.2.1 Block Diagram
2.3 Relay
The device uses a latching relay, to retain the state through a device reset following an OTA. If a
standard Normally Closed relay is used, and the device is reset while the relay is open, it will close
momentarily. This is avoided if the relay is latched, and reset will not affect it.
ZigBee RF Module
RF to/from
HAN
Relay
Button
3.3 V
5.0 V
PCB
Trace
Antenna
Linear
Reg
LED
AC In
Hot
AC In
Neutral
AC Out
Neutral
AC Out
Hot
V + I
Measurement
Current
Sense
Switching
Reg
Test /Program
Header
Serial
Flash
EEPROM
Ember
357