Hezbollah also has a massive social services wing, operating hospitals, schools, etc. I'd keep that in mind when hitching my wagon to this line of thinking.
Nothing in the linked article backs up the implication that only members of Helbollah’s militant wing had these.
It did, however, mention that an 8 year old girl was killed by one of them. Which is a foreseeable consequence of widely distributing a bunch of bombs and then detonating them without regard for who’s nearby.
Some sources are saying that some medics have been victims. Pagers are apparently a very useful resource for emergencies/medics (see motorola website).
They use a standard phone.