ST230 INTELLIGENT LINE TESTER ST230 Intelligent Line Tester is a new type of portable and intelligent line fault tester, which adopts some advanced technology such as intelligent CPU, IC and SMT machine, human design style, and especially integrates various kinds of functions such as CID, line performance test, secure line test (remote power checking) to be the one. This tester is designed following the theory of human engineering with the appearance style like barbell. It resists water, shock and with high reliability. FUNCTIONS: 1、Power Sensitive: Warning lineman to pay attention to A.C voltage 2、 Enable to test line faults such as insulation, line open 3、 Enable to ring the phone of subscriber automatically and to check the line maintenance 4、Tap and line selecting and checking 5、Dial, Talk, Hook, Redial, phone number display ,etc the same function as common telephone line tester 6、Dialing number display 7、Long-life durable testing clip 8、SMT exterior sticker 9、Self-test of Low voltage 10、Ground Insulation Voltage Measurement SPECIFICATIONS: u D.C Voltage:Range:0～260V，Error:±5％ u Insulation impedance: 0~40MΩ 2display u Ring Distance: ≤ 2Km u Open distance: ≤ 2Km u Monitoring Impedance: ≥1MΩ u CID Function, FSK/DTMF compatibility u Telephone dialing is in line with GB/T15279-94 u Battery: 9V NI-MH rechargeable u Dimension（mm:232?73?95 ST220 LINE TESTER ST220 Line Tester is a new kind of line fault tester with safety & multi-function; it reserves some functions of ST200, which integrates “112” to line testers, and adds a new function “Power Sensitive”, with long-life durable testing clip and new exterior sticker, it is really a necessary partner to lineman. FUNCTIONS: 1、 Power Sensitive, Warning lineman of danger 2、 Enable to test line faults such as insulation, line open 3、 Enable to ring subscriber’s phone and talk automatically, and to check the line maintenance 4、 Line selecting and checking 5、 Dial, Talk, Hook, Redial, display phone number, P/T converter, etc, the same function as common telephone line tester 6、 Extreme long-life durable testing clip 7、 SMT exterior sticker ST200 LINE TESTER FUNCTIONS： ◆ Dial, talk and hook Enable to dial and talk when linked to telephone line, just the same as common line tester. ◆ Fault test Link the test cord to subscriber’s line without power, enable to do the following tests: Insulation test and Open test。 ◆ Call subscriber and talk Link test line to subscribers line without power, enable to ring up subscribers telephone. This function can be used to check the line maintenance. ◆ Monitor Enable to monitor and check the line without influence the subscribers communication and digital process. ◆ Check wire pairs Enable to check wire pairs with ST200 (side A) and another available telephone in side B. SPECIFICATIONS： 1. Insulation resistance measurement: 0-2 MΩ, display in four grades 2. Ring distance: ≤1km 3. Open line resolution: ≤3km 4. DTMF apply to GB/T15297-94 5. Monitoring resistance: ≥150Kohm 6. Power: 2 normal 9V batteries 7. Dimension (mm): 146?54?37 8. Weight: ≤220g