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09 JUL 08
EchoSwitch II
25 of 33
Rev A
MN300650
Electrical
Input Power
The EchoSwitch II is powered from 95 to 250 VAC power. Power is applied to the L1 and L2
terminals. Typically, Hot is applied to L1 and Neutral to L2. The power terminals are
mechanically isolated so the inputs can be reversed.
Relay Connection
The EchoSwitch II features three 60 VA, 1A max SPDT relays. All three relays are isolated and
can be wired to switch either Normally Open (NO) or Normally Closed (NC). The example
below shows Relay 2 wired NC and Relay 3 wired NO. Make sure to select a relay state that is
fail-safe and takes into account when power is lost to the EchoSwitch II.