The AB2M-M1-W is a round miniature momentary pushbutton control unit from IDEC's A2 Series, featuring a 12 mm mounting hole and snap-action switching mechanism. It provides SPDT (Single Pole Double Throw) contact configuration with silver contact material rated at 250 V insulation voltage and 3 A thermal current. The unit operates across multiple voltage ranges (24 V, 110 V, and 220 V AC/DC) with contact ratings of 1.0 A at 24 V AC resistive load and 0.7 A at 24 V DC inductive load, with a minimum applicable load of 5 V AC/DC at 3 mA. The pushbutton is housed in a compact 22 mm body with 12 mm mounting holes and operates reliably across -25 °C to +55 °C, making it suitable for industrial machinery, control panels, and automation systems requiring momentary switching action.