Tilt switches are made of nonconductive tubes that have two electrical contacts and a material which acts as a conductor between the two electrical contacts. Mercury was a once commonly used ...

Tilt sensors are devices that produce an electrical output that varies with angular movement. They are sometimes referred to as inclinometers, but inclinometers produce both a signal and readout; tilt ...

As for tilt switches being used for such an application, it is almost unheard of, at least in Afghanistan. Too much could go wrong with the emplacer and cause unintended detonation.