E528 Product Guide
Rev 8.0 12/16/2016 4
Wireless Communication
2.4HHz Wireless RF
Table 1 e528 RF Characteristics
Installation Requirements
Location: The e528 must be located on a partitioning interior wall,
approximately 1.5 m (5 ft) above the floor, in a site of average
temperature. It is important to ensure that the thermostat is located away
from direct sunlight or radiant heat, air discharge grills, stairwells, outside
doors, steam or water pipes, warm air stacks, unheated/uncooled areas,
or sources of electrical or radio interference. The unit should not be
placed on an outside wall or behind a door. It is essential that the e4 is
mounted flush to the wall and mounted level in both the horizontal and
vertical planes; incorrect mounting can degrade IR, PIR, and
temperature measurement performance.
Installation Requirements for e4
equipped with PIR Motion Detection
The e4 thermostat can be equipped with a PIR
detector to augment the energy management
scheme by detecting motion in the guestroom.
Consider the PIR’s view angle, range
characteristics, and mounting position to ensure
proper coverage. Figure 3 below shows the ranges
of the flat and standard PIRs.
Performance 0dB 20dB
RF Data Rate 250kbps 250kbps
Antenna Type SMT SMT
Indoor Range 70ft 100ft+
Outdoor/RF line-of-site range 540ft 1000ft+
Transmit Power 1mW 10mW
Receive Sensitivity -94.6dBm -94.6dBm
Frequency Band 2.4GHz 2.4GHz
Encryption AES-128 AES-128
Protocol 802.15.4 802.15.4
Frequency Channels 11-26 11-26
Detection Ranges
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