Velleman Kits & Projects

Presision digital thermostat with wide temperature range and adjustable hysteresis. Can be calabrated in Celcius or Fahrenheit. Additional connection for economy switch, e.g. to lower the temperature by a few degrees.

A digital meter is a lot easier to read and much more precise than its analogue equivalent. Moreover, this panel meter is comparable to an analogue one because a regulated power supply is no longer needed ; in many cases, an ordinary 9V battery is sufficient. As a result of the compact meter construction, there will never be problems finding a place to install it. It can easily be combined with an adapter circuit or sensor

A circuit that produces a natural sounding barking dog with a sensitive "ear" to everything that comes near it. It is a faithful watchdog, which never sleeps and never has to be taken out for a walk.

Two input amplifiers that can be mounted in 4 different ways: mono microphone input, symmetric or asymmetric / mono line input, symmetric or asymmetric / stereo line input / stereo phono input. Each amplifier has one gain control (± 25dB).

If, like most of us, you do not have infrared eyesight, then at times you have probably found yourself fumbling for the ignition switch or seat belt in the dark. For people like you we have developed this solution. With extra push button and battery protection.

The alarm detects sudden voltage drops of the battery when the interior, trunk, or hood lights are switched on. To ensure correct operation, a number of control indications have been included, such as : flashing LED to indicate that the alarm is in standby mode after a set time (after you have left the car). Pre-alarm (built-in buzzer) to indicate that the alarm is activated, so that you will not forget to switch it off. The alarm is easy to switch on and off, either automatically or by means of the ignition switch or a remote control unit, such as the K8059/K8057 or MK161/MK162

This head light indicator may be set for one or two functions. To indicate that the headlights (or the sidelights) should be switched off after switching off the ignition contact (battery protection). Or to indicate that the head lights should be on once ignition contact is switched on (obligatory in some countries).

Universal, robust and compact are the key words that describe this amplifier. A stereo or a mono amplifier, with three input sensitivity settings. Overload and short-circuit protection, protection against incorrect power supply polarity and thermal protection. Speaker transient suppression.

Universal, robust and compact are the key words that describe this amplifier. A stereo or a mono amplifier, with three input sensitivity settings. Overload and short-circuit protection, protection against incorrect power supply polarity and thermal protection. Speaker transient suppression.

A dedicated power supply board, designed for use with K4004B 200w Mono/Stereo power amplifier. Fitted with two reservoir capacitors (10000µf 50V), protection fuses and LED indicators. It can be used for any split rail power supply application.