After releasing the push-button, the light signal rotates quickly at the 10 LEDs, slows down and then stops at random at one of the LEDs. During operation all LEDs shine except that LED that just receives the signal. That's why the luminous board looks very decorative.
This device produces a high ultrasonic sound (approx. 23 kHz). Martens, mice, etc. find this sound extremely annoying and these animals will leave that place (most). Ideal for installation into cars (as protection against martens), in houses against mice, etc
With the infrared spotlight CCD- and video cameras may recognize objects also in complete darkness. The infrared light is invisible for men, CCD-cameras can see well with an infrared spotlight. Perfect for inconspicuous observation of entrances, drives etc.
An LED lights up if a body approaches the ultrasonic sensors at a distance of 10 - 80 cm (depending on the size of the body). Use: parking-in assistance for cars in garages, alarm signal for persons or animals staying in a certain area.
With the enclosed optics and highly sensitive photodetector this light barrier has a max. range of up to 50 m! The infrared light ray is invisible for men. If the light ray between the transmitter and receiver is interrupted (if a person walks through it) the relay in the receiver switches.
This relay card could be released with weak signals from approx. 5mA upwards and will then switch a relay with a heavy current contact of 3A. Ideal as switching amplifier for other kits, which have solely a light emitting diode as output and should switch other devices and machines through the relay contact.
With the aid of this circuitry it is made possible to carry out functional tests of infrared remote controls used in TV-sets and video devices, etc. Whenever there is radiation of infrared beams on the Special-Sensor, the LED will light up and indicate that the infrared remote control is operated.
This generator produces ultrasonic sounds, which are adjustable within the range of approx. 8 - 35 kHz. It is said, that crawling and jumping parasites are banished through the ultrasonic sound. Frequency can be adjusted so that the domestic animal will not be disturbed.
Electronic flasher unit for glow lamps. Also suitable as alternating flasher. Flashing frequency: approx. 1 - 3 x per second. Ideal for usage within miniature constructing! Together with the additional kit B197 is feasible to operate flashers with loads up to 3A current consumption!
For testing highly resistive and low impedance connections. An extremely low holding-wire current flows (< 10 µA). If the connection is conductive, the piezo buzzer hums. Also usable as rain indicator when the test probes contact water!
Easy instructional kit for beginners ages 8 and up. The cables are not to be soldered, only screwed or twisted. The experiments are explained through illustrations and helpful descriptions. A 4.5 V - flat battery (not included) serves as current source.