Ideal for individuals with limited finger and hand mobility and those with minimal strength. Takes just a slight pull on the string to activate.The String switch is activated by using 1.5-oz/43-g of activation force to pull the string down. Provides auditory click and tactile feedback. Consider attaching the string to an extremity so that only a gross motor movement (general move of a larger limb) is needed to activate the switch. **$70.00 replacement cost