ventilation-control

Johnson Controls (PENN) A421ABG-02C electronic temperature control with plug and receptacle cords, 120 VAC, Type 1

Johnson Controls (PENN) A421ABG-02C electronic temperature control with plug and receptacle cords, 120 VAC, Type 1

Image: Johnson Controls (PENN).

$255expected, as an add-on

Spec sheet (PDF)Maker's page

Open the spec sheet
Mountingscrew or DIN-rail mount
Materialhigh-impact thermoplastic enclosure (Type 1, IP20)
Electricalvolts: 110/120 VAC 50/60 Hz · amps: relay 12 FLA / 72 LRA / 10 A resistive at 120 VAC · watts: 1.8 VA control draw · plug: 6 ft grounded plug cord + 6 ft receptacle cord
Where it goes in UNIT5.xyzWall near the fan's receptacle; sensor (A99) at miner exhaust height
Checked2026-11-02