Part # EXP-MS-N4X-AT-
L
V
Larson Electronics, LLC
Phone: (800) 369-6671
Fax: (903) 498-3364
www.larsonelectronics.com
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of
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EXP-MS-N4X-AT-
L
V
Explosion Proof Motion Sensor
Instruction Manual
Thank you for your purchase of the EXP-MS-N4X-AT-
L
V Motion Sensor, the following instructions are intended for this
part number only.
Installation
This unit is easily wall mounted via integral mounting bracket, which can be adjusted -90° to +30° vertically after
installation. The explosion proof housing provides two 1/2" or 3/4" hub openings located on either side of the housing for
running electrical conductors in a feed through configuration. A bushing seal at each conductor opening prevents
damage to wiring insulation.
This unit is designed to operate
on low voltage 12-24V AC or DC electrical circuits
. This motion sensor is suitable for
use in environments where combustible dusts and particulates may be present.
1/2" or 3/4" NPT tapped conduit
openings are provided on either of the unit in feed through versions while dead end versions have a single conduit
hub, providing easy and secure connection to main power line supplies.
The EXP-MS-N4X-AT-
L
V operates like a standard on/off light switch. The circuit is normally open when no motion is
present. Once motion is detected, the internal switch changes to a closed circuit, allowing voltage to pass through the
sensor and power the device(s) at the other end.
The sensor is an active motion detector; it emits high-frequency electro-magnetic waves (5.8GHz) and receives their
echo. The sensor detects the change in echo from even the slightest movement in its detection zone. A microprocessor
then triggers the “switch light ON” command. Detection is possible through doors, panes of glass or thin walls.
IMPORTANT:
persons or objects moving towards the sensor are detected best.
NOTE: the high frequency of the output of this sensor is <10Mw – that is just one 100
th
of the transmission
power of a mobile phone or the output of a microwave oven.
