User's Manual

EKL Imports LLC
PO Box 1997 ● Gig Harbor WA 98335
TEL [phone] ● [e-mail]
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HBT / LBT Wireless Safety Switch
User Manual
Product Description
The HBT/LBT Wireless Safety Switch is a two electronic module system using a low energy wireless signal
to create a safety interlock switch between two pieces of equipment. The HBT module is the key-side of
the system and the LBT module is the lock-side of the system. When the HBT is within range and properly
activated it sends a secure wireless signal to the LBT that effectively ‘unlocks’ the piece of equipment for
safe use. If, at any time, the HBT signal is interrupted or stopped the LBT module returns to its locked
state.
LBT Module Installation
The LBT module connects to the equipment (machine-side) so that the equipment cannot be powered or
operated without the LBT module being activated by the HBT module.
LBT Connections
1. Positive (red) and negative (black) wire leads from LBT connect to a regulated 5 volt DC power
source. The 5 volt DC source can be switched or constant depending on user requirement. Note
that to operate the LBT module must have power at all times.
2. Switch (blue) leads from LBT connect to equipment controls or equipment power depending on
voltage and current ratings of the equipment’s switched circuit. The LBT module is designed to
only switch low voltage and low current circuits directly (e.g. control circuits, etc.).
HBT Module Installation
The HBT module is battery powered and uses 3 switches (magnetic reed switches) to activate itself and
start transmitting its signal. The 3 switches may be used in any number of safety devices or procedures
that are required before the safe operation of the equipment (e.g. the proper connection of a safety
harness before operation of a lift is allowed).
HBT/LBT Operation
1. Engage HBT’s 3 switches.
2. LBT LED indicator will illuminate and LBT electromechanical relay will actuate.
3. If HBT power supply is interrupted or any of the HBT’s 3 switches are disengaged the HBT will
cease transmitting and the LBT will release its relay connection.