PW9242V

Inter‑M PW‑9242V is a weekly programmable timer used in public‑address (PA) and school bell systems. It automates scheduled playback of melodies, tones, or voice messages across a building’s audio network. It’s widely used in schools, factories, and public facilities where precise, repeatable timing is needed.

What the PW‑9242V does

It stores timed events—melodies, voice messages, and output channel selections—and triggers them automatically throughout the week. It’s essentially the “brain” of a classic school bell or announcement system.

Key functions include:

• Weekly scheduling with 1‑minute resolution
• Automatic playback of built‑in melodies (11 available)
• Voice playback when paired with the VF‑9104 voice recorder
• Channel selection for routing signals to specific PA zones
• On/off control for connected outputs
• Internal memory backup to preserve schedules during power loss
• Self‑test at power‑on to check memory integrity

These capabilities are confirmed across multiple technical descriptions.

Technical characteristics

The available documentation highlights several important design features:

• Memory interval: 1 minute
• Built‑in melodies: 11 types, each 3–45 seconds long
• Adjustable playback duration: via internal jumper settings
• Voice playback: up to 15 messages when used with VF‑9104
• Data protection: lock function to prevent accidental changes
• Internal battery: retains programmed data during power outages
• Self‑diagnostics: checks memory components at startup

These details appear consistently in user manuals and service descriptions.

Typical use cases

The PW‑9242V is commonly installed in:

• Schools for class-change bells and announcements
• Factories for shift signals and safety messages
• Public buildings for scheduled reminders or automated announcements
• Legacy PA systems where analog control is still in use

FEATURES:

• PROGRAM MEMORY AND MEMORY TIME INTERVAL: You can memory and store the datas for Automatic control of this timer. These datas are consist of an melody or voice number, channel number for signal output with operating time and on/off time for outlets. The time interval for memory is 1 minute.
• VARIETY MELODIES: You can use one of 11 melodies built in this timer. A playing time of these Melodies are 3-45 seconds and you can adjust the playing time for short by use option jumper which placed set inside.
• VOICE PLAY: (USING WITH MODEL VF-9104:Voice File Recorder) If you use this set with model VF-9104, you can play the maximum 15 voices(or music).
• SELF TEST: This set employ a self test function that in order to check the memory parts error when initial power on.
• PROTECT FUNCTION: In case of you don’t want to change the memorized data, you can protect the data using by this function.

SPECIFICATIONS

• Time Error.......................Less than ±2 Seconds/Month
• Oscillation Frequency...................................32.768kHz
• Memory Interval.................................................1 minute
• Effective Back-Up Time......................Over than 7 days
• Input Channels ......................................................5 CH
• Output Channels ...................................................4 CH
• Rechargeable Time .............Over than 15 Hours/80mA
• Melody Output Level.................................Maximum 1V
• Output Power of Outlet 1 .....................Maximum 500W
• Output Power of Outlet 2 .......................Maximum 30W

MELODY NAME AND NORMAL PLAYING TIME

• NO 1(Laidler Tanz) ...........................About 17 seconds
• NO 2(Amaryllis) ................................About 24 seconds
• NO 3(Home on the Range)...............About 45 seconds
• NO 4(Green sleeves)........................About 44 seconds
• NO 5(Fur Elise).................................About 25 seconds
• NO 6(A Maiden’s Prayer)..................About 17 seconds
• NO 7(Mountain Musician).................About 14 seconds
• NO 8(Holdilidia) ................................About 13 seconds
• NO 9(ALARM).....................................About 2 seconds
• NO 10(CHIME) ...................................About 2 seconds
• NO 11(Westminster Chimes)............About 16 seconds

GENERAL

• Power Consumption ....................................................18W
• Weight........................................................................4.5kg
• Dimensions ............................482(W) 88(H) 280(D)mm