HW4F-21F22QD-W-240V HW4F-21F22QD-W-24V HW4F-21F22QD-Y-120V HW4F-21F22QD-Y-12V HW4F-21F22QD-Y-240V HW4F-21F22QD-Y-24V HW4F-21G HW4F-21G-PI-USA HW4F-21-PI HW4F-21PW-PI-USA