Table of Contents
Advertisement
XW-111™ Wi-Fi Digital Sensor Users Manual
Section 2: Installation and Setup
2.1 XW-111 Digital Input Connections
The XW-111 can sense the state of up to two switch-closure sensors. Sensors with switch-closure
outputs include push buttons, magnetic door alarm switches, micro-switches, or any device which has a
relay, switch closure or open collector output. Both sensor inputs share the same GND connection. The
XW-111 can be configured for the alarm to be active when the switch is either open or closed. If possible,
use switches which are normally open (NO). When the switch contact is open no current flows thru the
switch and the longest battery life is achieved. When the switch is closed 17uA flows thru the switch.
The inputs use 3.3Volt logic and
work with simple switches and
relays. Do not connect the digital
inputs to a power source. The
inputs will work with cable lengths
up to 20-feet and should not be
routed near motors or AC wiring.
The connections for two switches
are shown to the right.
The enclosure can be mounted to a wall or panel with screws (not included). The two screw holes are
located underneath the batteries.
2.2 Power / Batteries
The XW-111 is powered from either a 5-volt DC wall transformer or two internal 1.5V "AA" batteries. If the
wall adapter is connected, no power is drawn from the batteries. If the external power fails the module
automatically switches to the internal batteries. No jumpers or switches are needed. The wall adapter
should be used for certain modes with high current demands such as: "Stand-Alone mode" with HTTP
server, ModBus or Remote Services enabled, "Slave mode" with high reporting rates, or when "access
point" is active.
Install the batteries as shown. Observe the "+" and "-"
markings molded in the enclosure underneath the
batteries. Both batteries should be replaced at the same
time. Do not install the XW-111 inside a freezer or where
low temperature conditions would severely diminish the
battery capacity.
Xytronix Research & Design, Inc.
Installation and Setup
Battery Installation
Page 5
Advertisement
Table of Contents
