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CM-330 Battery Operated Active Infra-red “Hands-Free” Switches Installation Instructions

Section 3: Applications & Set-up 

Applications 

See Diagram 3 for the location of the Dip switches.

DIP Switch Settings 

DIP Switch 1

Switch 1 – LED On/LED Off

This switch disables the LED, should this feature be 

desired. Factory setting is OFF. This feature will decrease 

the battery life if set to ON.
 

Switch 2 – Audio Enable

Set this switch ON to enable an audible beep every time 

the switch is activated. Factory default is OFF. Enabling 

this feature will use additional power and decrease the 

life of the battery. 

 

Dip Switch 2

Battery Strength Meter

To check the battery strength, place an object in front 

of the Surewave™ for approximately 5 seconds. The 

Surewave™ will beep up to 5 times indicating the battery 

charge level. 5 beeps being fully charged. 1-3 beeps 

indicates you should change the batteries. 

Adjustments

Once the Dip switches have 

been set, and the unit is 

installed in the frame or 

enclosure, apply power to the 

unit and observe operation.
Set both potentiometers to 

minimum setting initially (fully 

counter-clockwise). 
Adjust the range potentiometer 

by turning the pot in a clockwise 

manner, and passing your hand 

in front of the unit. Rotate the 

pot until the desired range is 

obtained. See Diagram 3 for 

locations.

CM-330

Description

1 LED Enable

Green LED flashes while the output is 

activated

2 Audio Enable

Piezo buzzer sounds when the output is 

activated

3 Not Used

4 Not Used

O

N

1

2

1

2

43

Activate

LED

Sounder

Error/Alarm

LED

Range Adj.

LED Enable

Audio Enable

MOM OP

MOM OP with Alarm

O

N

Diagram 3

Door

Frame

25mm

1" 

CM-324/N3

Diagram 4  

Wheelchair Sticker 

Placement

Function

SW1

SW2 Description

Momentary OFF

OFF

The output operates once and 

only re-engages after the object is 

removed

Momentary 

with alarm ON

OFF

The output operates once, and 

only re-engages after the object is 

removed. If an object remains in 

the detectable area, an alarm will 

generate after approximately 30 

seconds.

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