Use a digital multimeter set to the lowest Ohms range

The Modine 5H0749760007 Limit Switch is a critical OEM replacement part designed for high-limit temperature protection in Modine unit heaters and Hot Dawg series garage heaters

Constructed with durable materials to resist scale buildup

while they look similar

What does '1

KMC Controls RCC-1501 Reversing Relay Els PW 17895 Use a digital multimeter setThe KMC Controls RCC 1501 is a high performance pneumatic reversing relay engineered to invert proportional signals in HVAC control systems. As a veteran grade reversing relay, this unit is factory calibrated for an 8 psi crossover point, ensuring that branch line pressure decreases proportionally as input pressure increases. Designed for in line mounting, the RCC 1501 features a compact ABS housing that meets UL Flame Class 94 HB standards, making it