Caretec Ray - 1: Introduction; 2: Description of the Device

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1: Introduction
Ray is a small, yet robust, ultrasonic mobility aid designed and produced by
CareTec. Its ultrasonic emissions will recognize objects or obstacles in the way
and inform the user by emitting either acoustic or tactile signals.
How does Ray work? When switched on, Ray constantly emits ultrasonic
waves. Measuring the delay of the reflected waves, Ray is able to determine
the distance of a given object and announce this via acoustic or tactile signals.
The maximum range of coverage depends on the reflective character of the
measured object.
2: Description of the Device
Ray is a slim, handy and light weight device. The case is about 12 cm (5
inches) long with a flat end on one side, and a slightly round end on the
opposite end. On the round end of the device, you can feel 2 small holes, for
inserting the lanyard.
Take the device in one hand, so that the round end faces towards you and the
flat end, with the two sensors faces away from you. On the top surface, you
can feel 2 buttons. In the following instructions, the button further away will be
referred to as “Key 1” and the nearer button as “Key 2”.
On the slim left side you will find an earphone socket. The battery compartment
is located on the base of the device.
Consult instructions before use! Do not operate Ray
without reading the instruction manual. Get acquainted with
the device and all the accessories. Keep the instruction for
reference reading and pass it on with the device.