Honeywell ESSER IQ8 Operation And Installation Instruction page 29

Weakening of the wireless signal
Fig. 14: Weakening of the wireless signal in case of mechanical obstructions
(as a percentage)
*
Maximum range with line of sight between the IQ8Wireless detector base and the
IQ8Wireless transponder as well as optimum technical conditions.
FB 798941 / 10.06
IQ8Wireless transponder for wall mounting
max. 300m*
0% to -10%
Timber, plasterboard, leight-weight partition walls
-5% to -35%
Brick (or insulated partition walls)
-30% to -90%
Reinforced concrete wall
-90% to -100%
Metal, metal grating, aluminium lining
29