User's Manual

PRELIMINARY Confidential

M2x40 Mote Datasheet Dust Networks™ 7

Parameter Min Typ Max Units Comments

Output power, conducted

Power amplifier enabled +8 dBm V

= 3 V, 25 °C

Power amplifier disabled –3 dBm V

= 3 V, 25 °C

Range*

Power amplifier enabled:

Indoor 100 m

Outdoor 300 m

25 °C, 50% RH, 1 meter

above ground, +2 dBi

omni-directional antenna

Power amplifier disabled:

Indoor 25 m

Outdoor 200 m

* Actual RF range performance is subject to a number of installation-specific variables including, but not

restricted to ambient temperature, relative humidity, presence of active interference sources, line-of-sight

obstacles, near-presence of objects (for example, trees, walls, signage, and so on) that may induce

multipath fading. As a result, actual performance varies for each instance.

5.2 Antenna Specifications

A MMCX-compatible male connector is provided on board for the antenna connection. The antenna must meet specifications

in Table 8. For a list of FCC-approved antennae see section 10.1.2.

Table 8 Antenna Specifications

Parameter Value

Frequency range 2.4 – 2.4835 GHz

Impedance

50 Ω

Gain +2 dBi maximum

Pattern Omni-directional

Maximum VSWR 3:1

Connector MMCX*

* The M2x40 can accommodate the following RF mating connectors:

• MMCX straight connector such as Johnson 135-3402-001, or equivalent

• MMCX right angle connector such as Tyco 1408149-1, or equivalent

When the mote is placed inside an enclosure, the antenna should be mounted such that the radiating portion of the antenna

protrudes from the enclosure. The antenna should be connected using a MMCX connector on a coaxial cable. For optimum

performance, allow the antenna to be positioned vertically when installed.