Table of Contents
Advertisement
Specific Instructions:
The transmission energy of the series EE240 is limited according to certain standards,
alterations of the electronics with respect to the transmission license are therefore prohibited.
USA:
The antenna must be mounted more than 20 cm (8 inches) away from any human body.
1.4
Environmental Aspects
Products from E+E Elektronik® are developed and manufactured observing of all relevant requirements
with respect to environment protection. Please observe local regulations for the device disposal.
For disposal, the individual components of the device must be separated according to local recycling
regulations. The electronics shall be disposed of correctly as electronics waste. Batteries in particular
shall be disposed of at the designated collection points in accordance with national or local regulations.
2
Scope of Supply
EE242 base station
1 piece per independent network, quantity and features according to order code.
EE244 transmitter/router
Quantity and features according to order code, each EE244 comes with 1 piece of HA010707 4 pole
M12 connector for self assembly.
Sensing probes for EE244
Quantity and features according to order code.
EE245 room transmitter
Quantity and features according to order code.
3
Product Description
3.1
Wireless Network
3.1.1
General
An EE240 wireless sensor network consists of an EE242 base station, up to 500 EE244 and EE245
transmitters and up to 50 EE245-R routers.
The EE240 wireless sensor network uses the IEEE 802.15.4 radio standard. The RF modules operate
on 2.4 GHz with a power of 8 dBm.
The transmission range depends greatly on the local conditions. Certain obstacles such as reinforced
concrete walls, steel structures or metalised glas may attenuate the transmission signal and decrease
the transmission range.
The transmission range can be optimized by selecting appropriate locations for the sensors or by one or
more of the following measures:
• use of an antenna cable for placing the antenna at the optimal location
• use of probe extension cables for optimal location of the transmitter or router enclosure
• use of routers, which receive, amplify and re-transmit the signal.
Very important
• As a rule of the thumb, the signal strenghts during operation at any receiver (router or base station)
shall be min. 50%. The signal strengths (%) can be seen on the web server of EE242, see chapter
6.2.2 Transmitters.
User Manual EE240 Wireless Sensor Network
5
Advertisement
Table of Contents
