M2BJ
Safety Precautions
Refer to Safety Precautions for All Pushbutton Switches.
Precautions for Correct Use
Application Precautions
Short-circuiting Jumper (M2BJ-BTH)
• When power is supplied, there is an inrush current of up to 1 A.
Confirm that this will not adversely affect operation or damage any
devices before using the M2BJ in application. There is no inrush
current with DC-only models (M2BJ-@@@-D).
• With models that can use both AC and DC, residual energy in the
internal capacitor may cause residual sound.
• The Buzzer sounds continuously or intermittently depending on
how the short-circuiting bracket is attached to the case guide.
When the bracket is attached with the triangle on it facing direction
A (PC board side), the Buzzer sounds intermittently.
• To produce continuous sounds, attach the bracket to the case
guide so that the triangle on the bracket faces direction B.
• The bracket is set in direction A when ship the product. If the
bracket becomes lost, contact your OMRON representative. The
model number to order is M2BJ-BTH.
Wiring
• Perform soldering promptly and correctly at a temperature of 350°C
within 3 seconds.Wait for one minute after soldering before exerting
any external force on the solder.
• If flux is required, use non-corrosive rosin liquid. Ensure that the flux
does not penetrate the inside of the case.
Case guide
Direction A
• In order to improve the reliability of the soldering and to prevent
pattern burnout, loop the wire through the terminal hole before
soldering.
Direction B
Bracket
• In order to fit the terminal holes, use lead wires with a nominal cross
2
sectional area of 0.25 mm max.
Operating Environment
Short-circuit Bracket Mounting Location
• Do not use the Buzzer in environments where foreign substances
may enter the sound outlet. Otherwise, the Buzzer may not sound.
PC board
Bracket
Volume Adjustment Mechanism (M2BJ-BH Only)
• Adjust the volume by turning the control knob on the face of the
Buzzer using a screwdriver. Turn to the right to increase the volume
and turn to the left to decrease the volume.
• Turn the control knob with a torque of 0.98 to 2.94 mN·m.
Case guide
LED
Control knob
5
OMRON [ OMRON ELECTRONICS LLC ]
