To bridge this gap, many hobbyists and professionals use the system's (operating at 5V, normally closed) to integrate smart relays. By adding a Zigbee or Wi-Fi relay, you can keep the superior mechanical power of the
Today, the 100 SE has entered a second chapter of its life through the "Smart Home" movement. Because it operates on a simple normally closed (NC) crawford automatic 100 se better
| Feature | Crawford 100 SE | Modern Alternative (e.g., Watlow PM, Omron E5GC, Red Lion T16U) | Is Modern βBetterβ? | |--------|----------------|------------------------------------------------|---------------------| | | Basic, one-shot tune | Adaptive, continuous tune + overshoot suppression | β Yes β significantly | | Display | 4-digit LED | OLED or LCD with bar graph, trending | β Yes β more info | | Alarms | 2 fixed, one setpoint each | 3-4 configurable (deviation, rate-of-change, loop break) | β Yes β more flexible | | Communication | None (rare optional RS-485) | Ethernet/IP, Profinet, Modbus TCP, USB logging | β Yes β Industry 4.0 ready | | Input Universal | No β must order for TC or RTD | Yes β universal input on same model | β Yes β reduces spare parts | | Panel depth | ~100mm | ~60-80mm | β Yes β fits modern shallow enclosures | | Cost (new) | Discontinued (used market ~$50-100) | New ~$200-350 | β No β Crawford is cheaper used | | Repairability | Through-hole components, easy to fix | SMT, often unrepairable without BGA tools | β Yes β Crawford is better here | To bridge this gap, many hobbyists and professionals