The EKHO wireless fire system can be composed of a
combination of the following wireless devices:
EK‐WL8‐TRH Wireless translator
: this device is the
core of the wireless system; it communicates
continuously with wireless devices, such as sensors,
call points, sounders, etc. The translator connects to
a wired control panel via a signaling loop.
The whole system is controlled by the control panel
similar to any other fire alarm system. The translator
is the gateway between the control panel and the
radio devices.
EK‐WL8‐EXP Wireless expanders
: The translator
communicates with other wireless devices only if
they are in its communication range. Wireless
expanders are used when network coverage needs
to be expanded and/or the environment poses
difficulties to radio communication. These devices
act as repeating devices for communication between
wireless devices and the translator.
Sensors (EK‐WL8‐O, EK‐WL8‐H, EK‐WL8‐OH, EK‐
WL8‐OV)
are designed to detect smoke and/or heat
in the environment. If heat and/or smoke is present
and exceeds a defined limit, the wireless system
triggers an alarm condition.
EK‐WL8‐SND Sounders
play an audible warning
when the wireless fire alarm system is activated.
EK‐WL8‐CP Call points
provide a manual method for
initiating a fire alarm condition.
EK‐WL8‐IN Input modules
receive a signal from
wired conventional (non‐addressable) sensors and
devices and transmit them to the translator
EK‐WL8‐OUT Output modules
receive control
commands from the translator to open/close the
connected circuit. Designed to control the operation
/ state of external devices or plant such as air
conditioning / door release / emergency shut down.
The fire alarm panel controls the alarms and events
of the entire system. The EK‐WL8‐TRH wireless
translator is connected directly to the fire alarm
panel via the Hochiki ESP Enhanced System Protocol
and communicates with the wireless devices and the
wireless expanders.
The fire alarm panel receives all wireless
communications through the wireless translator and
transmits back the alarms and events through the
wireless translator to the wireless devices.
The wireless system is based on a mesh network,
which operates based on the following rules:
each device automatically chooses its parent
expander;
expanders automatically form a network for
delivering information to the main control
panel.
Wireless devices do not need to be assigned to a
specific expander nor do the expanders need to be
specified how to communicate with each other. The
wireless devices are simply initialized to the
translator and then programmed to the fire control
panel.
Wireless Devices: a General Description
System Structure
