Using of grandees of course has distance limitations. Typically Laser Tag grenades IR-signal works at less than a 10 meters (33 feet) radius (and in most cases it is limited to 5 meters or 16 feet radius). Grenade is a laser tag device usually can not be limited to a certain size of the damage by setting to certain number of damage points, and it usually sends a kill-signal to the player sensors.
In most cases it is used for destroying opposite team players in the rooms or behind the shelters or for neutralize the opposite team attack group. Grenades works most effective been tossed up above the heads of the players at the moment of emitters operation, ie in 3-4 seconds after pressing a button or pulling out the grenade pin. If grenade will be emitted over the heads of the players, then the effects radius will be the largest and the grenade signal will not be stooped by small obstacles.
It is considered that the grenade is one of the best devices when you play the assault or bases scenarios.