The Brennenstuhl MZ20 is a mechanical countdown timer designed for reliable, automated switching of electrical devices. It operates entirely without batteries or electronics, making it a durable and maintenance-free solution for everyday scheduling tasks.
96 switching times per day allow up to four schedule changes per hour, covering every 15-minute interval across a full 24-hour cycle
Mechanical countdown mechanism with a visible function display shows the remaining time until the next switch
Plug-in design (between-socket) requires no wiring or installation — simply insert between the wall socket and the appliance
Manual on/off override lets you activate or deactivate the connected device at any time, independent of the programmed schedule
What Sets the Brennenstuhl MZ20 Apart
Unlike digital or smart timers, the MZ20 relies on a purely mechanical countdown system that functions without any power source. This eliminates battery replacement, software updates, and connectivity issues. The 15-minute minimum switching interval combined with 96 daily switching points provides fine-grained control over energy-consuming devices such as lights, heaters, and fans.
Ideal for...
The timer is suited for households and small offices that need automated on/off control for lamps, fans, heaters, or other plug-in appliances without relying on Wi-Fi or a smartphone app. It is particularly useful for devices that should run only during specific hours — for example, a heater in the morning or a light in the evening.
Application of the Brennenstuhl MZ20
Plug the timer into a standard wall socket
Connect the appliance to the timer's output socket
Set the current time using the built-in clock mechanism
Program up to 96 switching points across the 24-hour day, each with a minimum 15-minute interval
The timer automatically executes the schedule; use the manual on/off button for immediate overrides
Brennenstuhl is a German manufacturer specializing in electrical safety and timer products, including mechanical countdown timers, surge protectors, and extension cords. The brand focuses on durable, no-frills devices for household and light-commercial use.
The MZ20 is a mechanical countdown timer used to automatically switch electrical appliances on and off at preset times. It is commonly used for lights, heaters, fans, and other plug-in devices in homes and offices.
Up to 96 switching times can be programmed across a 24-hour period, allowing a minimum switching interval of 15 minutes.
No. The MZ20 operates entirely on a mechanical countdown mechanism and does not require batteries, electricity, or any external power source to function.
The timer plugs directly into a standard wall socket. The appliance is then plugged into the timer's output socket. No wiring or professional installation is required.
The Brennenstuhl MZ20 comes with a 24-month manufacturer's warranty, providing coverage against material and manufacturing defects.
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