TZIDC Electro-Pneumatic Digital Positioner. 10: Case / Mounting: Aluminum case, protection class IP 65 (NEMA 4X)., 2: Input / Comm.: 4–20 mA input with HART communication protocol., 1: Explosion Protection: ATEX Intrinsic Safety (Ex ia IIC T6/T4 Gb)., 1: Output / Safe Pos.: Single-acting, fail-safe (vents air on power failure)., 5: Connections: Electrical: M20 x 1.5 thread; Pneumatic: G 1/4 thread., 0: Analog Feedback: Without analog position feedback module., 00: Digital Feedback: Without mechanical or digital position feedback kit., 1: Design / Varnish: Standard ABB design and varnish., B5: Special Version: Often indicates a specific firmware version or a customer-specific "NL" (non-standard) modification.