> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Gravity: CT1780 1-Wire K-Type Thermocouple Amplifier (-270°C to +1372°C Temp Range) **Type:** Product page · **SKU:** SEN0656 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia) **Page:** https://core-electronics.com.au/dfrobot-gravity-ct1780-1-wire-k-type-thermocouple-amplifier-high-temperature-arduino.html ([markdown](https://core-electronics.com.au/dfrobot-gravity-ct1780-1-wire-k-type-thermocouple-amplifier-high-temperature-arduino.html.md)) Accurately measure extreme temperatures (-270°C to 1372°C) with the Gravity CT1780 1-Wire K-Type Thermocouple Amplifier. Ideal for ovens, kilns, and furnaces... ## Pricing - **Price:** $33.40 (inc GST) — $30.36 AUD, exc GST ## Availability & dispatch - Available with a lead time — expect dispatch between Sep 04 and Sep 08. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0656:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SEN0656:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description The Gravity CT1780 is a cold-junction compensated thermocouple amplifier that makes monitoring extreme temperatures from -270°C to +1372°C straightforward and scalable. It accurately digitizes signals from a K-Type thermocouple, providing 0.25°C resolution, and transmits the data over a simple 1-Wire communication bus. This 1-Wire protocol allows multiple sensors to be daisy-chained on a single data line, perfect for monitoring various zones in industrial ovens, ceramic kilns, or scientific flame analysis. An integrated DIP switch further simplifies identifying individual sensors in a multi-point network, making complex setups manageable. Figure: Wiring Diagram of CT1780 amplifier & Arduino **Simplified Multi-Point Sensing with 1-Wire Protocol** Similar to the widely adopted DS18B20, the CT1780 amplifier utilizes the 1-Wire communication interface. This design drastically simplifies system wiring, requiring only a single data line to connect multiple sensors to a host controller. This architecture is ideal for projects that demand temperature monitoring across several distributed points over a wide area, as it conserves microcontroller I/O pins and reduces wiring complexity. **Effortless Sensor Identification with Onboard DIP Switch** A common challenge in multi-sensor arrays is identifying which physical sensor corresponds to a specific data reading. The CT1780 solves this by integrating an onboard DIP switch. In addition to the unique 64-bit address inherent to the 1-Wire protocol, this switch allows for the setting of a simple, user-defined address. When multiple CT1780 units are connected in parallel, this feature enables straightforward visual identification of the sensor currently providing the temperature reading, streamlining setup and debugging processes. **Ultra-Wide Measurement Range for Extreme Environments** Engineered for demanding thermal applications, the amplifier supports the full K-Type thermocouple measurement range from -270°C to +1372°C. The onboard cold-junction compensation ensures high accuracy across this spectrum, achieving a measurement error of =±2°C within the critical -200°C to 700°C range. With a 14-bit resolution (0.25°C), the module provides the precision needed for process control and monitoring in extreme temperature environments. ![](https://dfimg.dfrobot.com/enshop/image/data/SEN0656/TEST_0x0.jpg.webp) ### Specification - Input Voltage: 3.3~5.5V DC - Thermocouple Type: K Type - Measurement Range: -270°C~+1372°C - Operating temperature range of the amplifier board: -40°C~+125°C - Temperature measurement resolution: 14 bit/0.25°C - Temperature measurement error: =±2°C(-200°C~700°C), ±4°C(700°C~1350°C) - Communication Interface: Gravity Single Bus - Amplifier board size: 44\*22mm ### Documents [Product wiki](https://wiki.dfrobot.com/_SKU_SEN0656_One_Wire_High_Temperature_Sensor__K-Type_) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN0656-1.jpg)