Based on common industrial and automotive part numbering systems, the number **917841** most frequently refers to a **Digital Temperature Controller** (specifically the Honeywell/UDA series or similar industrial thermostats) or a specific **Automotive Connector/Wire Harness** component. Below is a breakdown of the electronic specifications for the most common component associated with this part number. ### 1. Component Overview: Digital Temperature Controller If this part refers to the industrial control module, its primary purpose is to regulate temperature in ovens, furnaces, or environmental chambers. | Specification | Details | | :--- | :--- | | **Input Type** | Thermocouple (J, K, T, R, S), RTD, or Linear DC (mV/V) | | **Supply Voltage** | 90 to 264 VAC or 24 VDC/VAC | | **Output Type** | Relay, SSR Driver, or Analog (4-20mA) | | **Display** | Dual LED (Process Variable & Setpoint) | | **Control Modes** | PID with Auto-tune, On/Off, or Manual | --- ### 2. Internal Electronic Architecture The device consists of several critical sub-systems: * **A/D Converter (Analog to Digital):** Converts the millivolt signals from thermal sensors into digital data for the microprocessor. * **Microprocessor Unit (MPU):** Executes the PID (Proportional-Integral-Derivative) algorithm to calculate the required power to reach the setpoint. * **Isolation Circuitry:** Opto-isolators protect the low-voltage logic components from high-voltage spikes on the power line or relay outputs. * **EEPROM Memory:** Stores user configuration and calibration data so that settings are not lost during power outages. --- ### 3. Connection Pinout (General) *Typical wiring configuration for a 1/16 DIN controller:* ```text Pin 1-2: AC Power Input (L, N) Pin 3-5: Relay Output (Common, NO, NC) Pin 6-8: Sensor Input (+, -, Ground/Shield) Pin 9-10: Auxiliary Alarm Output ``` --- ### 4. Alternative: Automotive Connector (917841-1) In some electronics catalogs, this part number refers to a **TE Connectivity/AMP** series connector. * **Type:** Pin & Receptacle housing. * **Pitch:** 2.5mm or 5.0mm (depending on series). * **Material:** PBT (Polybutylene Terephthalate) for high heat resistance. * **Usage:** Often used in PCB-to-wire connections for automotive sensors or lighting modules. ---