"Electronic indicating demand device" means an indicating device that determines demand values based on electronic pulse inputs from an auxiliary device to a solid state circuit designed to calculate and display demand quantities in conjunction with a timing signal derived from the line frequency or a crystal oscillator timing circuit.
N.H. Admin. Code § Puc 302.06
#6605, eff 10-21-97 (from Puc 302.01 ); ss by #8448, eff 10-18-05