No, the valve is actually designed so that the water is isolated from the electronics. In addition, the ioDIGITAL™ system operates under low voltage (5V). All current is properly isolated and sealed (through the controller) and the product is certified to cUPC with applicable standards ASSE 1016 & ASME A112.18.1M/CSA B 125.1 (shower valves), ASSE 1070 & CSA B125.3 (roman tub), and UL1951.
A GFCI outlet will provide additional protection.
The GFCI is an Earth Leakage Breaker that detects faults to ground. The current threshold is very low, typically 15mA, which means it will trip well before any risks could occur. Jetted tubs already require dedicated GFCIs (110V, 15-20A) for pump/motor and heaters.