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9V Siren

Documentation in acrobat format (K31)

cps31.jpg
A surprisingly loud siren for such a simple circuit. Uses voltage controlled oscillator. 0.5 Watt, 8 ohm speaker supplied. 9V operation. Ideal to attach to an alarm system which needs an sound module.(CPS31)
 
Quantity
Price
1 – 9$10.83
10 – 99$10.26
100 +$9.41

  (Kit - Basic Soldering Required)  
  CPS31  
  7  
 
 
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Mini-Vox and Relay kit
 
The idea behind a VOX (voice activated switch) is that instead of the user pressing a switch to activate a relay, the sound of the users voice itself activates the relay. This gives hands-free control over devices like tape recorders. Power supply needed: 12VDC center positive 2.5mm jack. Electret microphone to pick up the sound is included. PCB size: 44mm x 48mm (1.73inch x 1.89inch).
(CPS126)
Quantity
Price
1 – 9$13.11
10 – 99$12.42
100 +$11.39

  (Kit - Basic Soldering Required)  
  CPS126  
  10  
 
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Siren Sound Generator COB
 
Siren sound generator PCB size: 18mm x 15mm. COB contains a standard siren driver as found in piezo horns and toys. Drive circuit will tolerate a wide range of components values. 2V to 5V operation. It has automatic power down & a standby current of < 2uA. (CPSSG11)
Quantity
Price
1 – 9$11.40
10 – 99$10.80
100 – 999$9.90
1000 +$6.50

  (Component or Part)  
  CPSSG11  
  1047  
 
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