techSafe Room Sentry 130

The Room Sentry 130 anchors into the strike plate of any inward-opening door: the steel point in the frame that every forced entry has to get through. Close the door, clamp it in place, and the door is braced against force with a 130dB vibration alarm armed in the same motion.

If anyone tries the handle, the door physically resists opening and the siren fires before it moves an inch. Master keys, copied keys and plastic shims stop mattering, because the lock on your side of the door is the one that counts.

USB-C rechargeable: one charge covers about a year of standby. Palm-sized, TSA-compliant, and non-marring, so it leaves no trace on your door or your host's. Works on 99% of standard inward-opening doors in hotels, Airbnbs, dorms and rentals.