Choosing between a rotary encoder and a pressure switch may seem like comparing a volume knob to a pressure gauge, but both are real components in the sensors, encoders, and machine-safety toolbox. The EC11 is a shaft-driven encoder that reports rotation and accepts a momentary push. The Honeywell MER02000BYPNKABN01 is an industrial pressure switch that watches a pressure line and switches its output at a threshold. The right pick depends on what your machine needs to sense, not just on the price gap.
Quick Verdict
The EC11 fits low-voltage control panels, front-panel knobs, and microcontroller input stages where you want rotation plus a push button. The Honeywell pressure switch belongs in hydraulic or pneumatic circuits and industrial automation systems where pressure supervision is part of the control design. Let your application define the winner.
Comparison
| Product | Price | Function | Mounting / Style | Condition |
|---|---|---|---|---|
| 1 Pc - EC11 360 Degree Rotary Encoder PCB Mount Push Switch D Shaft | USD 2.50<br> | Rotary shaft encoder with push-to-actuate button | Through-hole PCB mount with PC pin termination | New |
| Honeywell MER02000BYPNKABN01 Pressure Switch Industrial Sensor New | USD 49.99<br> | Industrial pressure switch for automation and control | Industrial automation switch style | New - Open box (surplus stock) |
Where Each Product Wins
Choose the EC11 when your design has a PCB and you need a compact rotary input. The pins drop directly into the board, the D shaft gives a knob a stable mount, and the encoder's small footprint helps keep the layout tidy. It is a clean way to add a control knob to a microcontroller project.
Choose the Honeywell when your machine must react to pressure changes in an industrial environment. It is a dedicated pressure switch with a clearly identified model and MPN, so it can be specified in an automation schematic and wired into hydraulic or pneumatic control loops.
Product Notes
1 Pc - EC11 360 Degree Rotary Encoder PCB Mount Push Switch D Shaft
The EC11 is a single through-hole PCB mount component with a D shaft and a push-to-actuate switch. It produces 20 pulses per revolution in each direction, offering enough resolution for scrolling through menus, setting values, or trimming a control loop. The 7-pin layout terminates with PC pins, so you can solder it directly into a prototype board without extra wiring. The momentary switch under the shaft turns the same knob into a two-in-one control for rotation and clicking. The main limitation is the switch contact rating of 5 volts at 10 mA, which means it is intended for logic-level signals rather than directly driving relays, valves, or motors. This is a new part, and the packaging includes a California Prop 65 warning, which you may want to review before purchase.
Honeywell MER02000BYPNKABN01 Pressure Switch Industrial Sensor New
The Honeywell MER02000BYPNKABN01 is a genuine industrial pressure switch aimed at automation, hydraulic, pneumatic, and pressure-sensing applications. It is listed as new surplus stock and comes in the box shown, though the condition is described as "new - open box" rather than sealed retail packaging. That means you should expect the switch itself to be functional, but the box or unit may show minor cosmetic marks or shelf wear from storage. The clear model and MPN (MER02000BYPNKABN01) make it easy to reference in maintenance documents. The limitation is the open-box surplus nature; if you need a pristine retail box for your stores, this may not satisfy that, but for actual pressure-sensing duty in an industrial cabinet it is the dedicated component.
Final Choice by Use Case
For a benchtop project, a prototype control panel, or any low-voltage build where you need a rotary knob for adjustments, choose the EC11 rotary encoder. For an industrial machine-safety or pressure-supervision role, choose the Honeywell pressure switch. If your system needs both a user input and a pressure watchdog, install both and let each component handle the job it was designed for.
