Bed Sensor Pad Extra Large 6 Month 20 X 30 Cushions Coccyx 5 has an advanced operating Procedure Mask Ultra Pleated 5 has an advanced operating system that ensures a complete range of therapy no matter where you use it * Two separate timers to treat two areas patients at once or one larger area * STIM indicator light for precise intensity control * Four channels of electrical stimulation output * Large easy to read graphical LCD display with exact dial performance and programmable timer * Waveforms include TENS EMS 2 Pole Interferential 4 Pole Interferential and Russian * 10 presets per waveform totaling 50 presets (plus professional mode) * Preset protocols as well as customized user defined protocols * Designed for tabletop therapy cart or mobile use * Includes eight sets of electrodes eight sets of rubber electrodes with sponges four elastic straps four sets of lead wires two connector cables power cord and user manual with preset protocol guide * Product dimensions: 10 *Dual Independent Channels *Adjustable timer on standard and digital units *Adjustable Frequency and Pulse Duration parameters *Basic and Standard units feature three modes: Burst Normal and Modulation *Digital units feature 5 modes: Burst Normal Modulation Rate and Width Strength Duration and Bi Pulse * Digital unit has easy to read LCD Display and convenient digital controls Extra large option size is even better at reducing false alarms and getting the best bed coverage Large pad size helps reduce false alarms