Type 1(TH210)It is a handheld wall detector with high sensitivity for home decoration which could help you locate ed metal pipes live wire stud and metal frames accurately when you want to dig a hole to hanged a picture or install shelves. Features:This stud finder wall scanner allows you to efficiently switch between the 3 different scan modes within minutes. Easily locate the metal pipes as well as the live AC wires with this stud finder. Ergonomic Design: handheld and anti-slip body for comfortable and firm grip.Smart Beep Function: reminds you of the stud's location to find the stud center quickly.LCD with Backlight Display: LCD digital display to show the indication cleay.3 Detecting Modes: stud scan mode metal scan mode AC wire scan mode.Automatic Calibration: adjusts the detection automatically for precise detection.Suitable for professional homeowner or a DIY enthusiast.Specifications:Color: Orange + BlackMaterial: ABS*Maximum Detection Depth:Metal Rebar: 76mm AC Live Wire: 76mm Wood and Metal Studs: 38mm Operating Temperature: -20 ~ 60CStorage Temperature: -20 ~ 60CPower-Supply: 1 * 9V 6F22 Batterys(Not Included) Package Size: Approx. 232 * 149 * 45mm / 9.1 * 5.9 * 1.8inPackage Weight: Approx. 191g / 6.7ozPacking List:1 * Wall DetectorType 2 (TH250)This handheld wall er is designed to determine exact location of framing studs that are located behind the drywall. It will help you locate ed metal pipes live wire stud and metal frames accurately when you need to dig a hole to hanged a picture or install shelves. Features:Smart Beep Function &ErgonomicDesignWithanaudiblebeep to remind you of the stud's location and position to find the stud center quickly. Handheld and anti-slip body for comfortable and firm grip convenient to use.LCD with Backlight Display and Low Batterys Indication Large LCD digital display with green backlight and sound signal indication.4 Detecting Modes - During the stud sensor mode it can locate the the edges of wood or metal studs up to 0.75" (19mm) deep wood or metal studs up to 3/2" (38mm) metal rebar up to 2.36"(60mm) and AC wire up to 2"(51mm).Multi-scanner stud finder for Wood Metal Deep AC Wire. Quickly locate edges and center of wood wall studs metal pipes wooden joist rebar behind walls floors and ceilings also indicates the presence of live AC wire.Advanced multi-sense sensor technology for accurate and quick locating studs wood metal &ACwiresSuitableforprofessionalhomeowner or a DIY enthusiast.Specifications:Color: Black + OrangeMaterial: ABSDisplay: LCD with Green BacklightStud Mode: Detect studs with 3/4in 3/2in 2.36in and 2in mode Maximum Detection Depth:Wood or Metal Stud Scan: 0.75" (19mm) Deep Wood or Metal Stud Scan: 1.5" (38mm) Metal Scan: 2.36" (60mm) AC Live Wire Scan: 2" (51mm) Automatic Shutdown Time: Power-off in about 3 minutes when no button action and no object scannedIndication: Low batterys indication &beeperindicationWorkingCurrent;50maStandby Current: <;;1uaOperating Temperature: -20 - 50Storage Temperature: -20 - 50Power-Supply: 1 * 9V 6F22 Batterys (Not Included) Item Size: Approx. 167 * 75 * 38mm / 6.6 * 3 * 1.5in Item Weight: Approx. 148g / 5.2ozPackage Size: Approx. 185 * 80 * 50mm / 7.3 * 3.1 * 2inPackage Weight: Approx. 205g / 7.2ozPacking List:1 * Wall Stud Finder1 * English User Manual Origin:CN(Origin) Model Number:Gem Refractometer Certification:NONE Model Number:Wall Detector Detecting Modes:stud scan mode, metal scan mode, AC wire scan mode Item Size: Approx:15.4 * 6.9 * 3cm / 6.1 * 2.7 * 1.2in