Realistic POLICE SIREN KIT Runs on 6 to 12 volts. Drives any speaker. Two volume levels, 250 mW and 5 Watts. Easy to build two transistor circuit teaches too! Kids love it! Duplicates the upward and downward wail of a police siren. Great for alarms, kids toys, bikes, go-karts, etc. Easily built by all ages! Kit No. SM3 Realistic POLICE SIREN KIT Runs on 6 to 12 volts. Drives any speaker. Two volume levels, 250 mW and 5 Watts. Easy to build two transistor circuit teaches too! Kids love it! Duplicates the upward and downward wail of a police siren. Great for alarms, kids toys, bikes, ...
2 SM3 2 INTRODUCTION TO THE SM3 The Ramsey SM3 will duplicate the sound of a ... PC board INTRODUCTION TO THE SM3 The Ramsey SM3 will duplicate the sound of a ...