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Sensor Operation
The MOS-MT IoT sensor monitors occupancy, light level, temperature and
sound level in interior spaces. The sensor is powered by solar energy from
natural or artificial light sources. Powered by six solar cells, the sensor can
operate without battery up to 5 days. The sensor will operate even with
a brief exposure to light, however for best results the sensor should be
mounted in a location with exposure for 2.5 hours of natural or artificial light
(minimum of 500 lux or 46 foot-candles) on a daily basis.
The sensor must be within range of any receiving gateway or interface. The
MOS-MT and gateway/interface should be installed within 80' (24m) of
each other. For applications exceeding 80' (24m) range, telegram repeaters
may be needed to extend reception range.
Wireless System Layout Hint
• Reception range of 24 m (80 ft) - commercial office spaces (typical), up
to 100m (330 ft) line of sight
• Avoid locating transmitters and receivers on the same wall.
• Avoid locating transmitters and receivers where the telegrams must
penetrate walls at acute angles. This increases the material the telegram
must pass through reducing the signal power.
• Avoid large metal obstructions as they create radio shadows. Place
receivers in alternate locations to avoid the shadow or use repeaters to
go around the obstacle.
• Do not locate receivers close to other high frequency transmitters.
• Leave at least 3' between the receiver and any other source of
interference including, ballasts, LED drivers, computers, video
equipment, Wi-Fi/LAN routers, GSM modems and monitors.
SIDE VIEW:
Sensor Range
0
The sensor is offered with different lens options.
There is a lens with a high sensor ray density pattern (lens A) suitable for small
motion detection, however this lens has shorter detection range.
8ft
(2.4m)
3.7m
(12ft)
SIDE VIEW:
0
8ft
(2.4m)
10ft
(3.0m)
12ft
(3.7m)
6.1m
4.6m
(20ft)
(15ft)
fresnel technologies inc.
The second lens (B) has a broader range but is less sensitive for small motion detection.
2
2.7m
2.1m
1.5m
0.9m
(9ft)
(7ft)
(5ft)
(3ft)
3.0m
1.5m
(10ft)
(5ft)
0.9m
0.9m
1.5m
2.1m
2.7m
0
(3ft)
(3ft)
(5ft)
(7ft)
(9ft)
1.5m
1.5m
0
(5ft)
(5ft)
3.7m
(12ft)
Short Range Lens (A)
1000 sq.ft @ 8 ft.
3.0m
4.6m
(10ft)
(15ft)
6.1m
(20ft)
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