The A9XMC2D3: The module draws 3 VA from a 230 V AC supply (+/- 20 %), so it's not going to load a control transformer. The two digital inputs see a guaranteed ON-state above 164 V and a guaranteed OFF-state below 5 V (with leakage under 0.5 mA) — that's a clean threshold for industrial 230 V AC signals. The switching frequency maxes out at 10 Hz, so it's meant for status monitoring, not high-speed counting.
Clip it onto a DIN rail — 18 mm wide, 85 mm tall, 62 mm deep. The top tunnel terminals take power (1 to 16 mm² rigid, torque to 2 N·m). The bottom terminals handle the input wiring (1 to 6 mm² rigid, torque to 1 N·m). Strip 14 mm for the top, 9 mm for the bottom. The PA6 GF30 housing is rated UL 94 V0 at 960 °C for 30 seconds. The green/orange/red LED on the front gives local status — handy when you're walking the panel and want to see if the module has link to the concentrator.
Radio link and compliance
The module communicates via IEEE 802.15.4 in the 2.4 to 2.4835 GHz band (ETSI EN 300 328). It's designed to pair with the Acti9 PowerTag Link or PowerTag Link HD concentrator. Compliance covers ETSI EN 301 489-1/17, EN/IEC 61326-1 (industrial EMC), EN/IEC 61010-1, and EN/IEC 61010-2-201. Operating temperature range is -25 to 60 °C, storage from -40 to 85 °C, with 0 to 93 % relative humidity at 40 °C per IEC 60068-2-78. Altitude rated to 2000 m.