Suitable for use in conjunction with the Voice Alert Monitor and Anti-Tamper Care Alarm above - simply plug in to the chosen monitor unit. When an increase/decrease in pressure on the sensor mat occurs, the alarm on the monitor unit will be activated. Available as "Standard", "Premium" or "Long Life" versions. Standard mats come in two sizes: Small for wheelchairs and chairs, or Large for bed, floor or stairs. Premium mats have extra padding for greater comfort and come in Small or Large. Long Life mats are extra strong with a minimum life of one year, and available in Small or Large. All mats are designed to work with users weighing 27kg (4st 3lb) and above.