Screaming Meanie specializes in extremely loud, heavy-duty portable alarm clocks and countdown timers designed for deep sleepers, long-haul truckers, and travelers.
For over thirty years, Screaming Meanie has been producing some of the loudest portable alarm systems and countdown timers on the market. These compact, heavy-duty devices are specifically engineered to cut through deep sleep, severe ambient noise, and hearing impairments. The alarms consistently deliver an extreme 120-decibel alert—equivalent to a thunderclap or chainsaw—ensuring travelers, long-haul truck drivers, and deep sleepers wake up right on time.
Screaming Meanie alarms, such as the renowned TZ-120 and 220 models, feature nearly indestructible polycarbonate casings, multi-level volume adjustments, and integrated clips for belts or visors. Designed with portability and reliability in mind, they run on standard 9-volt batteries, making them fail-safe companions for the road or high-noise work environments.
Latest manuals from manuals+ curated for this brand.
Common questions about manuals, registration, and support for this brand.
Screaming Meanie alarms can reach an extreme 120 decibels (dB), making the alert comparable to a thunderclap or chainsaw. Most models also feature adjustable quieter settings (like 70 or 90 dB) for daily use.
Turn the device over, slide open the rear compartment latch, replace the standard 9-volt battery, and click the cover back into place securely.
Firmly press the START/STOP button (or ALARM button on some models) to silence the active alarm. Remove the battery if the device malfunctions.
A blank screen or non-responsive buttons usually indicate a dead or improperly connected 9V battery. Open the battery compartment, ensure terminals are snapped tightly, and replace with a fresh heavy-duty 9-volt battery.